20316135

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{131}}^1\times {\mathrm{211}}^1$

素因数の和:364

約数の個数: 48

約数和(自身を含む): 38282112

約数和(自身を除く): 17965977

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 131, 147, 211, 245, 393, 633, 655, 735, 917, 1055, 1477, 1965, 2751, 3165, 4431, 4585, 6419, 7385, 10339, 13755, 19257, 22155, 27641, 31017, 32095, 51695, 82923, 96285, 138205, 155085, 193487, 414615, 580461, 967435, 1354409, 2902305, 4063227, 6772045, 20316135]

約数ペア:

[(1, 20316135), (3, 6772045), (5, 4063227), (7, 2902305), (15, 1354409), (21, 967435), (35, 580461), (49, 414615), (105, 193487), (131, 155085), (147, 138205), (211, 96285), (245, 82923), (393, 51695), (633, 32095), (655, 31017), (735, 27641), (917, 22155), (1055, 19257), (1477, 13755), (1965, 10339), (2751, 7385), (3165, 6419), (4431, 4585)]