21019800

素因数分解:

$2^3\times 3^1\times 5^2\times {\mathrm{53}}^1\times {\mathrm{661}}^1$

素因数の和:733

約数の個数: 96

約数和(自身を含む): 66491280

約数和(自身を除く): 45471480

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 25, 30, 40, 50, 53, 60, 75, 100, 106, 120, 150, 159, 200, 212, 265, 300, 318, 424, 530, 600, 636, 661, 795, 1060, 1272, 1322, 1325, 1590, 1983, 2120, 2644, 2650, 3180, 3305, 3966, 3975, 5288, 5300, 6360, 6610, 7932, 7950, 9915, 10600, 13220, 15864, 15900, 16525, 19830, 26440, 31800, 33050, 35033, 39660, 49575, 66100, 70066, 79320, 99150, 105099, 132200, 140132, 175165, 198300, 210198, 280264, 350330, 396600, 420396, 525495, 700660, 840792, 875825, 1050990, 1401320, 1751650, 2101980, 2627475, 3503300, 4203960, 5254950, 7006600, 10509900, 21019800]

約数ペア:

[(1, 21019800), (2, 10509900), (3, 7006600), (4, 5254950), (5, 4203960), (6, 3503300), (8, 2627475), (10, 2101980), (12, 1751650), (15, 1401320), (20, 1050990), (24, 875825), (25, 840792), (30, 700660), (40, 525495), (50, 420396), (53, 396600), (60, 350330), (75, 280264), (100, 210198), (106, 198300), (120, 175165), (150, 140132), (159, 132200), (200, 105099), (212, 99150), (265, 79320), (300, 70066), (318, 66100), (424, 49575), (530, 39660), (600, 35033), (636, 33050), (661, 31800), (795, 26440), (1060, 19830), (1272, 16525), (1322, 15900), (1325, 15864), (1590, 13220), (1983, 10600), (2120, 9915), (2644, 7950), (2650, 7932), (3180, 6610), (3305, 6360), (3966, 5300), (3975, 5288)]