21550120025

素因数分解:

$5^2\times 7^1\times {\mathrm{101}}^1\times {\mathrm{379}}^1\times {\mathrm{3217}}^1$

素因数の和:3714

約数の個数: 48

約数和(自身を含む): 30932960640

約数和(自身を除く): 9382840615

約数列:

[1, 5, 7, 25, 35, 101, 175, 379, 505, 707, 1895, 2525, 2653, 3217, 3535, 9475, 13265, 16085, 17675, 22519, 38279, 66325, 80425, 112595, 191395, 267953, 324917, 562975, 956975, 1219243, 1339765, 1624585, 2274419, 6096215, 6698825, 8122925, 8534701, 11372095, 30481075, 42673505, 56860475, 123143543, 213367525, 615717715, 862004801, 3078588575, 4310024005, 21550120025]

約数ペア:

[(1, 21550120025), (5, 4310024005), (7, 3078588575), (25, 862004801), (35, 615717715), (101, 213367525), (175, 123143543), (379, 56860475), (505, 42673505), (707, 30481075), (1895, 11372095), (2525, 8534701), (2653, 8122925), (3217, 6698825), (3535, 6096215), (9475, 2274419), (13265, 1624585), (16085, 1339765), (17675, 1219243), (22519, 956975), (38279, 562975), (66325, 324917), (80425, 267953), (112595, 191395)]