19813465

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{151}}^1\times {\mathrm{163}}^1$

素因数の和:349

約数の個数: 32

約数和(自身を含む): 28717056

約数和(自身を除く): 8903591

約数列:

[1, 5, 7, 23, 35, 115, 151, 161, 163, 755, 805, 815, 1057, 1141, 3473, 3749, 5285, 5705, 17365, 18745, 24311, 24613, 26243, 121555, 123065, 131215, 172291, 566099, 861455, 2830495, 3962693, 19813465]

約数ペア:

[(1, 19813465), (5, 3962693), (7, 2830495), (23, 861455), (35, 566099), (115, 172291), (151, 131215), (161, 123065), (163, 121555), (755, 26243), (805, 24613), (815, 24311), (1057, 18745), (1141, 17365), (3473, 5705), (3749, 5285)]