31501250

素因数分解:

$2^1\times 5^4\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1$

素因数の和:141

約数の個数: 80

約数和(自身を含む): 67478400

約数和(自身を除く): 35977150

約数列:

[1, 2, 5, 10, 11, 22, 25, 29, 50, 55, 58, 79, 110, 125, 145, 158, 250, 275, 290, 319, 395, 550, 625, 638, 725, 790, 869, 1250, 1375, 1450, 1595, 1738, 1975, 2291, 2750, 3190, 3625, 3950, 4345, 4582, 6875, 7250, 7975, 8690, 9875, 11455, 13750, 15950, 18125, 19750, 21725, 22910, 25201, 36250, 39875, 43450, 49375, 50402, 57275, 79750, 98750, 108625, 114550, 126005, 199375, 217250, 252010, 286375, 398750, 543125, 572750, 630025, 1086250, 1260050, 1431875, 2863750, 3150125, 6300250, 15750625, 31501250]

約数ペア:

[(1, 31501250), (2, 15750625), (5, 6300250), (10, 3150125), (11, 2863750), (22, 1431875), (25, 1260050), (29, 1086250), (50, 630025), (55, 572750), (58, 543125), (79, 398750), (110, 286375), (125, 252010), (145, 217250), (158, 199375), (250, 126005), (275, 114550), (290, 108625), (319, 98750), (395, 79750), (550, 57275), (625, 50402), (638, 49375), (725, 43450), (790, 39875), (869, 36250), (1250, 25201), (1375, 22910), (1450, 21725), (1595, 19750), (1738, 18125), (1975, 15950), (2291, 13750), (2750, 11455), (3190, 9875), (3625, 8690), (3950, 7975), (4345, 7250), (4582, 6875)]