280339920

素因数分解:

$2^4\times 3^3\times 5^1\times 7^1\times {\mathrm{18541}}^1$

素因数の和:18570

約数の個数: 160

約数和(自身を含む): 1103619840

約数和(自身を除く): 823279920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 84, 90, 105, 108, 112, 120, 126, 135, 140, 144, 168, 180, 189, 210, 216, 240, 252, 270, 280, 315, 336, 360, 378, 420, 432, 504, 540, 560, 630, 720, 756, 840, 945, 1008, 1080, 1260, 1512, 1680, 1890, 2160, 2520, 3024, 3780, 5040, 7560, 15120, 18541, 37082, 55623, 74164, 92705, 111246, 129787, 148328, 166869, 185410, 222492, 259574, 278115, 296656, 333738, 370820, 389361, 444984, 500607, 519148, 556230, 648935, 667476, 741640, 778722, 834345, 889968, 1001214, 1038296, 1112460, 1168083, 1297870, 1334952, 1483280, 1557444, 1668690, 1946805, 2002428, 2076592, 2224920, 2336166, 2503035, 2595740, 2669904, 3114888, 3337380, 3504249, 3893610, 4004856, 4449840, 4672332, 5006070, 5191480, 5840415, 6229776, 6674760, 7008498, 7787220, 8009712, 9344664, 10012140, 10382960, 11680830, 13349520, 14016996, 15574440, 17521245, 18689328, 20024280, 23361660, 28033992, 31148880, 35042490, 40048560, 46723320, 56067984, 70084980, 93446640, 140169960, 280339920]

約数ペア:

[(1, 280339920), (2, 140169960), (3, 93446640), (4, 70084980), (5, 56067984), (6, 46723320), (7, 40048560), (8, 35042490), (9, 31148880), (10, 28033992), (12, 23361660), (14, 20024280), (15, 18689328), (16, 17521245), (18, 15574440), (20, 14016996), (21, 13349520), (24, 11680830), (27, 10382960), (28, 10012140), (30, 9344664), (35, 8009712), (36, 7787220), (40, 7008498), (42, 6674760), (45, 6229776), (48, 5840415), (54, 5191480), (56, 5006070), (60, 4672332), (63, 4449840), (70, 4004856), (72, 3893610), (80, 3504249), (84, 3337380), (90, 3114888), (105, 2669904), (108, 2595740), (112, 2503035), (120, 2336166), (126, 2224920), (135, 2076592), (140, 2002428), (144, 1946805), (168, 1668690), (180, 1557444), (189, 1483280), (210, 1334952), (216, 1297870), (240, 1168083), (252, 1112460), (270, 1038296), (280, 1001214), (315, 889968), (336, 834345), (360, 778722), (378, 741640), (420, 667476), (432, 648935), (504, 556230), (540, 519148), (560, 500607), (630, 444984), (720, 389361), (756, 370820), (840, 333738), (945, 296656), (1008, 278115), (1080, 259574), (1260, 222492), (1512, 185410), (1680, 166869), (1890, 148328), (2160, 129787), (2520, 111246), (3024, 92705), (3780, 74164), (5040, 55623), (7560, 37082), (15120, 18541)]