21158625

素因数分解:

$3^1\times 5^3\times {\mathrm{17}}^1\times {\mathrm{3319}}^1$

素因数の和:3354

約数の個数: 32

約数和(自身を含む): 37290240

約数和(自身を除く): 16131615

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 125, 255, 375, 425, 1275, 2125, 3319, 6375, 9957, 16595, 49785, 56423, 82975, 169269, 248925, 282115, 414875, 846345, 1244625, 1410575, 4231725, 7052875, 21158625]

約数ペア:

[(1, 21158625), (3, 7052875), (5, 4231725), (15, 1410575), (17, 1244625), (25, 846345), (51, 414875), (75, 282115), (85, 248925), (125, 169269), (255, 82975), (375, 56423), (425, 49785), (1275, 16595), (2125, 9957), (3319, 6375)]