19281200

素因数分解:

$2^4\times 5^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1$

素因数の和:139

約数の個数: 120

約数和(自身を含む): 50740800

約数和(自身を除く): 31459600

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 38, 40, 43, 50, 59, 76, 80, 86, 95, 100, 118, 152, 172, 190, 200, 215, 236, 295, 304, 344, 380, 400, 430, 472, 475, 590, 688, 760, 817, 860, 944, 950, 1075, 1121, 1180, 1475, 1520, 1634, 1720, 1900, 2150, 2242, 2360, 2537, 2950, 3268, 3440, 3800, 4085, 4300, 4484, 4720, 5074, 5605, 5900, 6536, 7600, 8170, 8600, 8968, 10148, 11210, 11800, 12685, 13072, 16340, 17200, 17936, 20296, 20425, 22420, 23600, 25370, 28025, 32680, 40592, 40850, 44840, 48203, 50740, 56050, 63425, 65360, 81700, 89680, 96406, 101480, 112100, 126850, 163400, 192812, 202960, 224200, 241015, 253700, 326800, 385624, 448400, 482030, 507400, 771248, 964060, 1014800, 1205075, 1928120, 2410150, 3856240, 4820300, 9640600, 19281200]

約数ペア:

[(1, 19281200), (2, 9640600), (4, 4820300), (5, 3856240), (8, 2410150), (10, 1928120), (16, 1205075), (19, 1014800), (20, 964060), (25, 771248), (38, 507400), (40, 482030), (43, 448400), (50, 385624), (59, 326800), (76, 253700), (80, 241015), (86, 224200), (95, 202960), (100, 192812), (118, 163400), (152, 126850), (172, 112100), (190, 101480), (200, 96406), (215, 89680), (236, 81700), (295, 65360), (304, 63425), (344, 56050), (380, 50740), (400, 48203), (430, 44840), (472, 40850), (475, 40592), (590, 32680), (688, 28025), (760, 25370), (817, 23600), (860, 22420), (944, 20425), (950, 20296), (1075, 17936), (1121, 17200), (1180, 16340), (1475, 13072), (1520, 12685), (1634, 11800), (1720, 11210), (1900, 10148), (2150, 8968), (2242, 8600), (2360, 8170), (2537, 7600), (2950, 6536), (3268, 5900), (3440, 5605), (3800, 5074), (4085, 4720), (4300, 4484)]