21297750

素因数分解:

$2^1\times 3^1\times 5^3\times {\mathrm{73}}^1\times {\mathrm{389}}^1$

素因数の和:482

約数の個数: 64

約数和(自身を含む): 54025920

約数和(自身を除く): 32728170

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 73, 75, 125, 146, 150, 219, 250, 365, 375, 389, 438, 730, 750, 778, 1095, 1167, 1825, 1945, 2190, 2334, 3650, 3890, 5475, 5835, 9125, 9725, 10950, 11670, 18250, 19450, 27375, 28397, 29175, 48625, 54750, 56794, 58350, 85191, 97250, 141985, 145875, 170382, 283970, 291750, 425955, 709925, 851910, 1419850, 2129775, 3549625, 4259550, 7099250, 10648875, 21297750]

約数ペア:

[(1, 21297750), (2, 10648875), (3, 7099250), (5, 4259550), (6, 3549625), (10, 2129775), (15, 1419850), (25, 851910), (30, 709925), (50, 425955), (73, 291750), (75, 283970), (125, 170382), (146, 145875), (150, 141985), (219, 97250), (250, 85191), (365, 58350), (375, 56794), (389, 54750), (438, 48625), (730, 29175), (750, 28397), (778, 27375), (1095, 19450), (1167, 18250), (1825, 11670), (1945, 10950), (2190, 9725), (2334, 9125), (3650, 5835), (3890, 5475)]