20913516

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{44687}}^1$

素因数の和:44710

約数の個数: 36

約数和(自身を含む): 56932512

約数和(自身を除く): 36018996

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 234, 468, 44687, 89374, 134061, 178748, 268122, 402183, 536244, 580931, 804366, 1161862, 1608732, 1742793, 2323724, 3485586, 5228379, 6971172, 10456758, 20913516]

約数ペア:

[(1, 20913516), (2, 10456758), (3, 6971172), (4, 5228379), (6, 3485586), (9, 2323724), (12, 1742793), (13, 1608732), (18, 1161862), (26, 804366), (36, 580931), (39, 536244), (52, 402183), (78, 268122), (117, 178748), (156, 134061), (234, 89374), (468, 44687)]