20981250

素因数分解:

$2^1\times 3^2\times 5^5\times {\mathrm{373}}^1$

素因数の和:406

約数の個数: 72

約数和(自身を含む): 56972916

約数和(自身を除く): 35991666

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 30, 45, 50, 75, 90, 125, 150, 225, 250, 373, 375, 450, 625, 746, 750, 1119, 1125, 1250, 1865, 1875, 2238, 2250, 3125, 3357, 3730, 3750, 5595, 5625, 6250, 6714, 9325, 9375, 11190, 11250, 16785, 18650, 18750, 27975, 28125, 33570, 46625, 55950, 56250, 83925, 93250, 139875, 167850, 233125, 279750, 419625, 466250, 699375, 839250, 1165625, 1398750, 2098125, 2331250, 3496875, 4196250, 6993750, 10490625, 20981250]

約数ペア:

[(1, 20981250), (2, 10490625), (3, 6993750), (5, 4196250), (6, 3496875), (9, 2331250), (10, 2098125), (15, 1398750), (18, 1165625), (25, 839250), (30, 699375), (45, 466250), (50, 419625), (75, 279750), (90, 233125), (125, 167850), (150, 139875), (225, 93250), (250, 83925), (373, 56250), (375, 55950), (450, 46625), (625, 33570), (746, 28125), (750, 27975), (1119, 18750), (1125, 18650), (1250, 16785), (1865, 11250), (1875, 11190), (2238, 9375), (2250, 9325), (3125, 6714), (3357, 6250), (3730, 5625), (3750, 5595)]