21160100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{397}}^1$

素因数の和:465

約数の個数: 72

約数和(自身を含む): 50783208

約数和(自身を除く): 29623108

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 41, 50, 52, 65, 82, 100, 130, 164, 205, 260, 325, 397, 410, 533, 650, 794, 820, 1025, 1066, 1300, 1588, 1985, 2050, 2132, 2665, 3970, 4100, 5161, 5330, 7940, 9925, 10322, 10660, 13325, 16277, 19850, 20644, 25805, 26650, 32554, 39700, 51610, 53300, 65108, 81385, 103220, 129025, 162770, 211601, 258050, 325540, 406925, 423202, 516100, 813850, 846404, 1058005, 1627700, 2116010, 4232020, 5290025, 10580050, 21160100]

約数ペア:

[(1, 21160100), (2, 10580050), (4, 5290025), (5, 4232020), (10, 2116010), (13, 1627700), (20, 1058005), (25, 846404), (26, 813850), (41, 516100), (50, 423202), (52, 406925), (65, 325540), (82, 258050), (100, 211601), (130, 162770), (164, 129025), (205, 103220), (260, 81385), (325, 65108), (397, 53300), (410, 51610), (533, 39700), (650, 32554), (794, 26650), (820, 25805), (1025, 20644), (1066, 19850), (1300, 16277), (1588, 13325), (1985, 10660), (2050, 10322), (2132, 9925), (2665, 7940), (3970, 5330), (4100, 5161)]