217072125

素因数分解:

$3^2\times 5^3\times {\mathrm{157}}^1\times {\mathrm{1229}}^1$

素因数の和:1407

約数の個数: 48

約数和(自身を含む): 394121520

約数和(自身を除く): 177049395

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 125, 157, 225, 375, 471, 785, 1125, 1229, 1413, 2355, 3687, 3925, 6145, 7065, 11061, 11775, 18435, 19625, 30725, 35325, 55305, 58875, 92175, 153625, 176625, 192953, 276525, 460875, 578859, 964765, 1382625, 1736577, 2894295, 4823825, 8682885, 14471475, 24119125, 43414425, 72357375, 217072125]

約数ペア:

[(1, 217072125), (3, 72357375), (5, 43414425), (9, 24119125), (15, 14471475), (25, 8682885), (45, 4823825), (75, 2894295), (125, 1736577), (157, 1382625), (225, 964765), (375, 578859), (471, 460875), (785, 276525), (1125, 192953), (1229, 176625), (1413, 153625), (2355, 92175), (3687, 58875), (3925, 55305), (6145, 35325), (7065, 30725), (11061, 19625), (11775, 18435)]