20153908

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{821}}^1$

素因数の和:880

約数の個数: 36

約数和(自身を含む): 39460932

約数和(自身を除く): 19307024

約数列:

[1, 2, 4, 17, 19, 34, 38, 68, 76, 323, 361, 646, 722, 821, 1292, 1444, 1642, 3284, 6137, 12274, 13957, 15599, 24548, 27914, 31198, 55828, 62396, 265183, 296381, 530366, 592762, 1060732, 1185524, 5038477, 10076954, 20153908]

約数ペア:

[(1, 20153908), (2, 10076954), (4, 5038477), (17, 1185524), (19, 1060732), (34, 592762), (38, 530366), (68, 296381), (76, 265183), (323, 62396), (361, 55828), (646, 31198), (722, 27914), (821, 24548), (1292, 15599), (1444, 13957), (1642, 12274), (3284, 6137)]