81038750

素因数分解:

$2^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{4987}}^1$

素因数の和:5022

約数の個数: 40

約数和(自身を含む): 163616376

約数和(自身を除く): 82577626

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 250, 325, 625, 650, 1250, 1625, 3250, 4987, 8125, 9974, 16250, 24935, 49870, 64831, 124675, 129662, 249350, 324155, 623375, 648310, 1246750, 1620775, 3116875, 3241550, 6233750, 8103875, 16207750, 40519375, 81038750]

約数ペア:

[(1, 81038750), (2, 40519375), (5, 16207750), (10, 8103875), (13, 6233750), (25, 3241550), (26, 3116875), (50, 1620775), (65, 1246750), (125, 648310), (130, 623375), (250, 324155), (325, 249350), (625, 129662), (650, 124675), (1250, 64831), (1625, 49870), (3250, 24935), (4987, 16250), (8125, 9974)]