20501025

素因数分解:

$3^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{113}}^1$

素因数の和:226

約数の個数: 48

約数和(自身を含む): 35622720

約数和(自身を除く): 15121695

約数列:

[1, 3, 5, 15, 25, 41, 59, 75, 113, 123, 177, 205, 295, 339, 565, 615, 885, 1025, 1475, 1695, 2419, 2825, 3075, 4425, 4633, 6667, 7257, 8475, 12095, 13899, 20001, 23165, 33335, 36285, 60475, 69495, 100005, 115825, 166675, 181425, 273347, 347475, 500025, 820041, 1366735, 4100205, 6833675, 20501025]

約数ペア:

[(1, 20501025), (3, 6833675), (5, 4100205), (15, 1366735), (25, 820041), (41, 500025), (59, 347475), (75, 273347), (113, 181425), (123, 166675), (177, 115825), (205, 100005), (295, 69495), (339, 60475), (565, 36285), (615, 33335), (885, 23165), (1025, 20001), (1475, 13899), (1695, 12095), (2419, 8475), (2825, 7257), (3075, 6667), (4425, 4633)]