80240540

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{233}}^1\times {\mathrm{257}}^1$

素因数の和:566

約数の個数: 48

約数和(自身を含む): 172422432

約数和(自身を除く): 92181892

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 233, 257, 268, 335, 466, 514, 670, 932, 1028, 1165, 1285, 1340, 2330, 2570, 4660, 5140, 15611, 17219, 31222, 34438, 59881, 62444, 68876, 78055, 86095, 119762, 156110, 172190, 239524, 299405, 312220, 344380, 598810, 1197620, 4012027, 8024054, 16048108, 20060135, 40120270, 80240540]

約数ペア:

[(1, 80240540), (2, 40120270), (4, 20060135), (5, 16048108), (10, 8024054), (20, 4012027), (67, 1197620), (134, 598810), (233, 344380), (257, 312220), (268, 299405), (335, 239524), (466, 172190), (514, 156110), (670, 119762), (932, 86095), (1028, 78055), (1165, 68876), (1285, 62444), (1340, 59881), (2330, 34438), (2570, 31222), (4660, 17219), (5140, 15611)]