778858860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{998537}}^1$

素因数の和:998562

約数の個数: 48

約数和(自身を含む): 2348561376

約数和(自身を除く): 1569702516

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 998537, 1997074, 2995611, 3994148, 4992685, 5991222, 9985370, 11982444, 12980981, 14978055, 19970740, 25961962, 29956110, 38942943, 51923924, 59912220, 64904905, 77885886, 129809810, 155771772, 194714715, 259619620, 389429430, 778858860]

約数ペア:

[(1, 778858860), (2, 389429430), (3, 259619620), (4, 194714715), (5, 155771772), (6, 129809810), (10, 77885886), (12, 64904905), (13, 59912220), (15, 51923924), (20, 38942943), (26, 29956110), (30, 25961962), (39, 19970740), (52, 14978055), (60, 12980981), (65, 11982444), (78, 9985370), (130, 5991222), (156, 4992685), (195, 3994148), (260, 2995611), (390, 1997074), (780, 998537)]