81231470

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{3911}}^1$

素因数の和:4016

約数の個数: 32

約数和(自身を含む): 153225216

約数和(自身を除く): 71993746

約数列:

[1, 2, 5, 10, 31, 62, 67, 134, 155, 310, 335, 670, 2077, 3911, 4154, 7822, 10385, 19555, 20770, 39110, 121241, 242482, 262037, 524074, 606205, 1212410, 1310185, 2620370, 8123147, 16246294, 40615735, 81231470]

約数ペア:

[(1, 81231470), (2, 40615735), (5, 16246294), (10, 8123147), (31, 2620370), (62, 1310185), (67, 1212410), (134, 606205), (155, 524074), (310, 262037), (335, 242482), (670, 121241), (2077, 39110), (3911, 20770), (4154, 19555), (7822, 10385)]