20261020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{523}}^1$

素因数の和:694

約数の個数: 48

約数和(自身を含む): 46216800

約数和(自身を除く): 25955780

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 149, 260, 298, 523, 596, 745, 1046, 1490, 1937, 2092, 2615, 2980, 3874, 5230, 6799, 7748, 9685, 10460, 13598, 19370, 27196, 33995, 38740, 67990, 77927, 135980, 155854, 311708, 389635, 779270, 1013051, 1558540, 2026102, 4052204, 5065255, 10130510, 20261020]

約数ペア:

[(1, 20261020), (2, 10130510), (4, 5065255), (5, 4052204), (10, 2026102), (13, 1558540), (20, 1013051), (26, 779270), (52, 389635), (65, 311708), (130, 155854), (149, 135980), (260, 77927), (298, 67990), (523, 38740), (596, 33995), (745, 27196), (1046, 19370), (1490, 13598), (1937, 10460), (2092, 9685), (2615, 7748), (2980, 6799), (3874, 5230)]