20542795

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{151}}^1$

素因数の和:212

約数の個数: 48

約数和(自身を含む): 32044032

約数和(自身を除く): 11501237

約数列:

[1, 5, 7, 13, 23, 35, 65, 91, 115, 151, 161, 169, 299, 455, 755, 805, 845, 1057, 1183, 1495, 1963, 2093, 3473, 3887, 5285, 5915, 9815, 10465, 13741, 17365, 19435, 24311, 25519, 27209, 45149, 68705, 121555, 127595, 136045, 178633, 225745, 316043, 586937, 893165, 1580215, 2934685, 4108559, 20542795]

約数ペア:

[(1, 20542795), (5, 4108559), (7, 2934685), (13, 1580215), (23, 893165), (35, 586937), (65, 316043), (91, 225745), (115, 178633), (151, 136045), (161, 127595), (169, 121555), (299, 68705), (455, 45149), (755, 27209), (805, 25519), (845, 24311), (1057, 19435), (1183, 17365), (1495, 13741), (1963, 10465), (2093, 9815), (3473, 5915), (3887, 5285)]