21907860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{28087}}^1$

素因数の和:28112

約数の個数: 48

約数和(自身を含む): 66062976

約数和(自身を除く): 44155116

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, 28087, 56174, 84261, 112348, 140435, 168522, 280870, 337044, 365131, 421305, 561740, 730262, 842610, 1095393, 1460524, 1685220, 1825655, 2190786, 3651310, 4381572, 5476965, 7302620, 10953930, 21907860]

約数ペア:

[(1, 21907860), (2, 10953930), (3, 7302620), (4, 5476965), (5, 4381572), (6, 3651310), (10, 2190786), (12, 1825655), (13, 1685220), (15, 1460524), (20, 1095393), (26, 842610), (30, 730262), (39, 561740), (52, 421305), (60, 365131), (65, 337044), (78, 280870), (130, 168522), (156, 140435), (195, 112348), (260, 84261), (390, 56174), (780, 28087)]