20976540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{26893}}^1$

素因数の和:26918

約数の個数: 48

約数和(自身を含む): 63254688

約数和(自身を除く): 42278148

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, 26893, 53786, 80679, 107572, 134465, 161358, 268930, 322716, 349609, 403395, 537860, 699218, 806790, 1048827, 1398436, 1613580, 1748045, 2097654, 3496090, 4195308, 5244135, 6992180, 10488270, 20976540]

約数ペア:

[(1, 20976540), (2, 10488270), (3, 6992180), (4, 5244135), (5, 4195308), (6, 3496090), (10, 2097654), (12, 1748045), (13, 1613580), (15, 1398436), (20, 1048827), (26, 806790), (30, 699218), (39, 537860), (52, 403395), (60, 349609), (65, 322716), (78, 268930), (130, 161358), (156, 134465), (195, 107572), (260, 80679), (390, 53786), (780, 26893)]