21297675

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{113}}^1\times {\mathrm{359}}^1$

素因数の和:492

約数の個数: 48

約数和(自身を含む): 40711680

約数和(自身を除く): 19414005

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 113, 175, 339, 359, 525, 565, 791, 1077, 1695, 1795, 2373, 2513, 2825, 3955, 5385, 7539, 8475, 8975, 11865, 12565, 19775, 26925, 37695, 40567, 59325, 62825, 121701, 188475, 202835, 283969, 608505, 851907, 1014175, 1419845, 3042525, 4259535, 7099225, 21297675]

約数ペア:

[(1, 21297675), (3, 7099225), (5, 4259535), (7, 3042525), (15, 1419845), (21, 1014175), (25, 851907), (35, 608505), (75, 283969), (105, 202835), (113, 188475), (175, 121701), (339, 62825), (359, 59325), (525, 40567), (565, 37695), (791, 26925), (1077, 19775), (1695, 12565), (1795, 11865), (2373, 8975), (2513, 8475), (2825, 7539), (3955, 5385)]