21980400

素因数分解:

$2^4\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{1409}}^1$

素因数の和:1443

約数の個数: 120

約数和(自身を含む): 75880560

約数和(自身を除く): 53900160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 25, 26, 30, 39, 40, 48, 50, 52, 60, 65, 75, 78, 80, 100, 104, 120, 130, 150, 156, 195, 200, 208, 240, 260, 300, 312, 325, 390, 400, 520, 600, 624, 650, 780, 975, 1040, 1200, 1300, 1409, 1560, 1950, 2600, 2818, 3120, 3900, 4227, 5200, 5636, 7045, 7800, 8454, 11272, 14090, 15600, 16908, 18317, 21135, 22544, 28180, 33816, 35225, 36634, 42270, 54951, 56360, 67632, 70450, 73268, 84540, 91585, 105675, 109902, 112720, 140900, 146536, 169080, 183170, 211350, 219804, 274755, 281800, 293072, 338160, 366340, 422700, 439608, 457925, 549510, 563600, 732680, 845400, 879216, 915850, 1099020, 1373775, 1465360, 1690800, 1831700, 2198040, 2747550, 3663400, 4396080, 5495100, 7326800, 10990200, 21980400]

約数ペア:

[(1, 21980400), (2, 10990200), (3, 7326800), (4, 5495100), (5, 4396080), (6, 3663400), (8, 2747550), (10, 2198040), (12, 1831700), (13, 1690800), (15, 1465360), (16, 1373775), (20, 1099020), (24, 915850), (25, 879216), (26, 845400), (30, 732680), (39, 563600), (40, 549510), (48, 457925), (50, 439608), (52, 422700), (60, 366340), (65, 338160), (75, 293072), (78, 281800), (80, 274755), (100, 219804), (104, 211350), (120, 183170), (130, 169080), (150, 146536), (156, 140900), (195, 112720), (200, 109902), (208, 105675), (240, 91585), (260, 84540), (300, 73268), (312, 70450), (325, 67632), (390, 56360), (400, 54951), (520, 42270), (600, 36634), (624, 35225), (650, 33816), (780, 28180), (975, 22544), (1040, 21135), (1200, 18317), (1300, 16908), (1409, 15600), (1560, 14090), (1950, 11272), (2600, 8454), (2818, 7800), (3120, 7045), (3900, 5636), (4227, 5200)]