31687890

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2621}}^1$

素因数の和:2675

約数の個数: 64

約数和(自身を含む): 84575232

約数和(自身を除く): 52887342

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 31, 39, 62, 65, 78, 93, 130, 155, 186, 195, 310, 390, 403, 465, 806, 930, 1209, 2015, 2418, 2621, 4030, 5242, 6045, 7863, 12090, 13105, 15726, 26210, 34073, 39315, 68146, 78630, 81251, 102219, 162502, 170365, 204438, 243753, 340730, 406255, 487506, 511095, 812510, 1022190, 1056263, 1218765, 2112526, 2437530, 3168789, 5281315, 6337578, 10562630, 15843945, 31687890]

約数ペア:

[(1, 31687890), (2, 15843945), (3, 10562630), (5, 6337578), (6, 5281315), (10, 3168789), (13, 2437530), (15, 2112526), (26, 1218765), (30, 1056263), (31, 1022190), (39, 812510), (62, 511095), (65, 487506), (78, 406255), (93, 340730), (130, 243753), (155, 204438), (186, 170365), (195, 162502), (310, 102219), (390, 81251), (403, 78630), (465, 68146), (806, 39315), (930, 34073), (1209, 26210), (2015, 15726), (2418, 13105), (2621, 12090), (4030, 7863), (5242, 6045)]