3969550

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1$

素因数の和:253

約数の個数: 48

約数和(自身を含む): 8249472

約数和(自身を除く): 4279922

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 50, 62, 65, 130, 155, 197, 310, 325, 394, 403, 650, 775, 806, 985, 1550, 1970, 2015, 2561, 4030, 4925, 5122, 6107, 9850, 10075, 12214, 12805, 20150, 25610, 30535, 61070, 64025, 79391, 128050, 152675, 158782, 305350, 396955, 793910, 1984775, 3969550]

約数ペア:

[(1, 3969550), (2, 1984775), (5, 793910), (10, 396955), (13, 305350), (25, 158782), (26, 152675), (31, 128050), (50, 79391), (62, 64025), (65, 61070), (130, 30535), (155, 25610), (197, 20150), (310, 12805), (325, 12214), (394, 10075), (403, 9850), (650, 6107), (775, 5122), (806, 4925), (985, 4030), (1550, 2561), (1970, 2015)]