214680505

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{8447}}^1$

素因数の和:8505

約数の個数: 32

約数和(自身を含む): 306561024

約数和(自身を除く): 91880519

約数列:

[1, 5, 13, 17, 23, 65, 85, 115, 221, 299, 391, 1105, 1495, 1955, 5083, 8447, 25415, 42235, 109811, 143599, 194281, 549055, 717995, 971405, 1866787, 2525653, 3302777, 9333935, 12628265, 16513885, 42936101, 214680505]

約数ペア:

[(1, 214680505), (5, 42936101), (13, 16513885), (17, 12628265), (23, 9333935), (65, 3302777), (85, 2525653), (115, 1866787), (221, 971405), (299, 717995), (391, 549055), (1105, 194281), (1495, 143599), (1955, 109811), (5083, 42235), (8447, 25415)]