991250

素因数分解:

$2^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{61}}^1$

素因数の和:96

約数の個数: 40

約数和(自身を含む): 2033724

約数和(自身を除く): 1042474

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 61, 65, 122, 125, 130, 250, 305, 325, 610, 625, 650, 793, 1250, 1525, 1586, 1625, 3050, 3250, 3965, 7625, 7930, 8125, 15250, 16250, 19825, 38125, 39650, 76250, 99125, 198250, 495625, 991250]

約数ペア:

[(1, 991250), (2, 495625), (5, 198250), (10, 99125), (13, 76250), (25, 39650), (26, 38125), (50, 19825), (61, 16250), (65, 15250), (122, 8125), (125, 7930), (130, 7625), (250, 3965), (305, 3250), (325, 3050), (610, 1625), (625, 1586), (650, 1525), (793, 1250)]