20869810

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{233}}^1$

素因数の和:319

約数の個数: 48

約数和(自身を含む): 41622984

約数和(自身を除く): 20753174

約数列:

[1, 2, 5, 10, 13, 26, 53, 65, 106, 130, 169, 233, 265, 338, 466, 530, 689, 845, 1165, 1378, 1690, 2330, 3029, 3445, 6058, 6890, 8957, 12349, 15145, 17914, 24698, 30290, 39377, 44785, 61745, 78754, 89570, 123490, 160537, 196885, 321074, 393770, 802685, 1605370, 2086981, 4173962, 10434905, 20869810]

約数ペア:

[(1, 20869810), (2, 10434905), (5, 4173962), (10, 2086981), (13, 1605370), (26, 802685), (53, 393770), (65, 321074), (106, 196885), (130, 160537), (169, 123490), (233, 89570), (265, 78754), (338, 61745), (466, 44785), (530, 39377), (689, 30290), (845, 24698), (1165, 17914), (1378, 15145), (1690, 12349), (2330, 8957), (3029, 6890), (3445, 6058)]