250288025

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{509}}^1$

素因数の和:638

約数の個数: 48

約数和(自身を含む): 358570800

約数和(自身を除く): 108282775

約数列:

[1, 5, 13, 17, 25, 65, 85, 89, 221, 325, 425, 445, 509, 1105, 1157, 1513, 2225, 2545, 5525, 5785, 6617, 7565, 8653, 12725, 19669, 28925, 33085, 37825, 43265, 45301, 98345, 112489, 165425, 216325, 226505, 491725, 562445, 588913, 770117, 1132525, 2812225, 2944565, 3850585, 10011521, 14722825, 19252925, 50057605, 250288025]

約数ペア:

[(1, 250288025), (5, 50057605), (13, 19252925), (17, 14722825), (25, 10011521), (65, 3850585), (85, 2944565), (89, 2812225), (221, 1132525), (325, 770117), (425, 588913), (445, 562445), (509, 491725), (1105, 226505), (1157, 216325), (1513, 165425), (2225, 112489), (2545, 98345), (5525, 45301), (5785, 43265), (6617, 37825), (7565, 33085), (8653, 28925), (12725, 19669)]