21804900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{5591}}^1$

素因数の和:5621

約数の個数: 72

約数和(自身を含む): 67953984

約数和(自身を除く): 46149084

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 60, 65, 75, 78, 100, 130, 150, 156, 195, 260, 300, 325, 390, 650, 780, 975, 1300, 1950, 3900, 5591, 11182, 16773, 22364, 27955, 33546, 55910, 67092, 72683, 83865, 111820, 139775, 145366, 167730, 218049, 279550, 290732, 335460, 363415, 419325, 436098, 559100, 726830, 838650, 872196, 1090245, 1453660, 1677300, 1817075, 2180490, 3634150, 4360980, 5451225, 7268300, 10902450, 21804900]

約数ペア:

[(1, 21804900), (2, 10902450), (3, 7268300), (4, 5451225), (5, 4360980), (6, 3634150), (10, 2180490), (12, 1817075), (13, 1677300), (15, 1453660), (20, 1090245), (25, 872196), (26, 838650), (30, 726830), (39, 559100), (50, 436098), (52, 419325), (60, 363415), (65, 335460), (75, 290732), (78, 279550), (100, 218049), (130, 167730), (150, 145366), (156, 139775), (195, 111820), (260, 83865), (300, 72683), (325, 67092), (390, 55910), (650, 33546), (780, 27955), (975, 22364), (1300, 16773), (1950, 11182), (3900, 5591)]