21583750

素因数分解:

$2^1\times 5^4\times {\mathrm{31}}^1\times {\mathrm{557}}^1$

素因数の和:610

約数の個数: 40

約数和(自身を含む): 41836608

約数和(自身を除く): 20252858

約数列:

[1, 2, 5, 10, 25, 31, 50, 62, 125, 155, 250, 310, 557, 625, 775, 1114, 1250, 1550, 2785, 3875, 5570, 7750, 13925, 17267, 19375, 27850, 34534, 38750, 69625, 86335, 139250, 172670, 348125, 431675, 696250, 863350, 2158375, 4316750, 10791875, 21583750]

約数ペア:

[(1, 21583750), (2, 10791875), (5, 4316750), (10, 2158375), (25, 863350), (31, 696250), (50, 431675), (62, 348125), (125, 172670), (155, 139250), (250, 86335), (310, 69625), (557, 38750), (625, 34534), (775, 27850), (1114, 19375), (1250, 17267), (1550, 13925), (2785, 7750), (3875, 5570)]