19811484800

素因数分解:

$2^7\times 5^2\times {\mathrm{53}}^1\times {\mathrm{199}}^1\times {\mathrm{587}}^1$

素因数の和:863

約数の個数: 192

約数和(自身を含む): 50199912000

約数和(自身を除く): 30388427200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 53, 64, 80, 100, 106, 128, 160, 199, 200, 212, 265, 320, 398, 400, 424, 530, 587, 640, 796, 800, 848, 995, 1060, 1174, 1325, 1592, 1600, 1696, 1990, 2120, 2348, 2650, 2935, 3184, 3200, 3392, 3980, 4240, 4696, 4975, 5300, 5870, 6368, 6784, 7960, 8480, 9392, 9950, 10547, 10600, 11740, 12736, 14675, 15920, 16960, 18784, 19900, 21094, 21200, 23480, 25472, 29350, 31111, 31840, 33920, 37568, 39800, 42188, 42400, 46960, 52735, 58700, 62222, 63680, 75136, 79600, 84376, 84800, 93920, 105470, 116813, 117400, 124444, 127360, 155555, 159200, 168752, 169600, 187840, 210940, 233626, 234800, 248888, 263675, 311110, 318400, 337504, 375680, 421880, 467252, 469600, 497776, 527350, 584065, 622220, 636800, 675008, 777775, 843760, 934504, 939200, 995552, 1054700, 1168130, 1244440, 1350016, 1555550, 1687520, 1869008, 1878400, 1991104, 2109400, 2336260, 2488880, 2920325, 3111100, 3375040, 3738016, 3982208, 4218800, 4672520, 4977760, 5840650, 6191089, 6222200, 6750080, 7476032, 8437600, 9345040, 9955520, 11681300, 12382178, 12444400, 14952064, 16875200, 18690080, 19911040, 23362600, 24764356, 24888800, 30955445, 33750400, 37380160, 46725200, 49528712, 49777600, 61910890, 74760320, 93450400, 99057424, 99555200, 123821780, 154777225, 186900800, 198114848, 247643560, 309554450, 373801600, 396229696, 495287120, 619108900, 792459392, 990574240, 1238217800, 1981148480, 2476435600, 3962296960, 4952871200, 9905742400, 19811484800]

約数ペア:

[(1, 19811484800), (2, 9905742400), (4, 4952871200), (5, 3962296960), (8, 2476435600), (10, 1981148480), (16, 1238217800), (20, 990574240), (25, 792459392), (32, 619108900), (40, 495287120), (50, 396229696), (53, 373801600), (64, 309554450), (80, 247643560), (100, 198114848), (106, 186900800), (128, 154777225), (160, 123821780), (199, 99555200), (200, 99057424), (212, 93450400), (265, 74760320), (320, 61910890), (398, 49777600), (400, 49528712), (424, 46725200), (530, 37380160), (587, 33750400), (640, 30955445), (796, 24888800), (800, 24764356), (848, 23362600), (995, 19911040), (1060, 18690080), (1174, 16875200), (1325, 14952064), (1592, 12444400), (1600, 12382178), (1696, 11681300), (1990, 9955520), (2120, 9345040), (2348, 8437600), (2650, 7476032), (2935, 6750080), (3184, 6222200), (3200, 6191089), (3392, 5840650), (3980, 4977760), (4240, 4672520), (4696, 4218800), (4975, 3982208), (5300, 3738016), (5870, 3375040), (6368, 3111100), (6784, 2920325), (7960, 2488880), (8480, 2336260), (9392, 2109400), (9950, 1991104), (10547, 1878400), (10600, 1869008), (11740, 1687520), (12736, 1555550), (14675, 1350016), (15920, 1244440), (16960, 1168130), (18784, 1054700), (19900, 995552), (21094, 939200), (21200, 934504), (23480, 843760), (25472, 777775), (29350, 675008), (31111, 636800), (31840, 622220), (33920, 584065), (37568, 527350), (39800, 497776), (42188, 469600), (42400, 467252), (46960, 421880), (52735, 375680), (58700, 337504), (62222, 318400), (63680, 311110), (75136, 263675), (79600, 248888), (84376, 234800), (84800, 233626), (93920, 210940), (105470, 187840), (116813, 169600), (117400, 168752), (124444, 159200), (127360, 155555)]