28288080

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{389}}^1$

素因数の和:509

約数の個数: 120

約数和(自身を含む): 96188040

約数和(自身を除く): 67899960

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 101, 120, 144, 180, 202, 240, 303, 360, 389, 404, 505, 606, 720, 778, 808, 909, 1010, 1167, 1212, 1515, 1556, 1616, 1818, 1945, 2020, 2334, 2424, 3030, 3112, 3501, 3636, 3890, 4040, 4545, 4668, 4848, 5835, 6060, 6224, 7002, 7272, 7780, 8080, 9090, 9336, 11670, 12120, 14004, 14544, 15560, 17505, 18180, 18672, 23340, 24240, 28008, 31120, 35010, 36360, 39289, 46680, 56016, 70020, 72720, 78578, 93360, 117867, 140040, 157156, 196445, 235734, 280080, 314312, 353601, 392890, 471468, 589335, 628624, 707202, 785780, 942936, 1178670, 1414404, 1571560, 1768005, 1885872, 2357340, 2828808, 3143120, 3536010, 4714680, 5657616, 7072020, 9429360, 14144040, 28288080]

約数ペア:

[(1, 28288080), (2, 14144040), (3, 9429360), (4, 7072020), (5, 5657616), (6, 4714680), (8, 3536010), (9, 3143120), (10, 2828808), (12, 2357340), (15, 1885872), (16, 1768005), (18, 1571560), (20, 1414404), (24, 1178670), (30, 942936), (36, 785780), (40, 707202), (45, 628624), (48, 589335), (60, 471468), (72, 392890), (80, 353601), (90, 314312), (101, 280080), (120, 235734), (144, 196445), (180, 157156), (202, 140040), (240, 117867), (303, 93360), (360, 78578), (389, 72720), (404, 70020), (505, 56016), (606, 46680), (720, 39289), (778, 36360), (808, 35010), (909, 31120), (1010, 28008), (1167, 24240), (1212, 23340), (1515, 18672), (1556, 18180), (1616, 17505), (1818, 15560), (1945, 14544), (2020, 14004), (2334, 12120), (2424, 11670), (3030, 9336), (3112, 9090), (3501, 8080), (3636, 7780), (3890, 7272), (4040, 7002), (4545, 6224), (4668, 6060), (4848, 5835)]