12905990500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{1985537}}^1$

素因数の和:1985569

約数の個数: 48

約数和(自身を含む): 30354904944

約数和(自身を除く): 17448914444

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 250, 260, 325, 500, 650, 1300, 1625, 3250, 6500, 1985537, 3971074, 7942148, 9927685, 19855370, 25811981, 39710740, 49638425, 51623962, 99276850, 103247924, 129059905, 198553700, 248192125, 258119810, 496384250, 516239620, 645299525, 992768500, 1290599050, 2581198100, 3226497625, 6452995250, 12905990500]

約数ペア:

[(1, 12905990500), (2, 6452995250), (4, 3226497625), (5, 2581198100), (10, 1290599050), (13, 992768500), (20, 645299525), (25, 516239620), (26, 496384250), (50, 258119810), (52, 248192125), (65, 198553700), (100, 129059905), (125, 103247924), (130, 99276850), (250, 51623962), (260, 49638425), (325, 39710740), (500, 25811981), (650, 19855370), (1300, 9927685), (1625, 7942148), (3250, 3971074), (6500, 1985537)]