290726540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{15749}}^1$

素因数の和:15842

約数の個数: 48

約数和(自身を含む): 666792000

約数和(自身を除く): 376065460

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 71, 130, 142, 260, 284, 355, 710, 923, 1420, 1846, 3692, 4615, 9230, 15749, 18460, 31498, 62996, 78745, 157490, 204737, 314980, 409474, 818948, 1023685, 1118179, 2047370, 2236358, 4094740, 4472716, 5590895, 11181790, 14536327, 22363580, 29072654, 58145308, 72681635, 145363270, 290726540]

約数ペア:

[(1, 290726540), (2, 145363270), (4, 72681635), (5, 58145308), (10, 29072654), (13, 22363580), (20, 14536327), (26, 11181790), (52, 5590895), (65, 4472716), (71, 4094740), (130, 2236358), (142, 2047370), (260, 1118179), (284, 1023685), (355, 818948), (710, 409474), (923, 314980), (1420, 204737), (1846, 157490), (3692, 78745), (4615, 62996), (9230, 31498), (15749, 18460)]