21276875

素因数分解:

$5^4\times {\mathrm{59}}^1\times {\mathrm{577}}^1$

素因数の和:656

約数の個数: 20

約数和(自身を含む): 27085080

約数和(自身を除く): 5808205

約数列:

[1, 5, 25, 59, 125, 295, 577, 625, 1475, 2885, 7375, 14425, 34043, 36875, 72125, 170215, 360625, 851075, 4255375, 21276875]

約数ペア:

[(1, 21276875), (5, 4255375), (25, 851075), (59, 360625), (125, 170215), (295, 72125), (577, 36875), (625, 34043), (1475, 14425), (2885, 7375)]