217423875

素因数分解:

$3^1\times 5^3\times {\mathrm{29}}^1\times {\mathrm{19993}}^1$

素因数の和:20040

約数の個数: 32

約数和(自身を含む): 374287680

約数和(自身を除く): 156863805

約数列:

[1, 3, 5, 15, 25, 29, 75, 87, 125, 145, 375, 435, 725, 2175, 3625, 10875, 19993, 59979, 99965, 299895, 499825, 579797, 1499475, 1739391, 2499125, 2898985, 7497375, 8696955, 14494925, 43484775, 72474625, 217423875]

約数ペア:

[(1, 217423875), (3, 72474625), (5, 43484775), (15, 14494925), (25, 8696955), (29, 7497375), (75, 2898985), (87, 2499125), (125, 1739391), (145, 1499475), (375, 579797), (435, 499825), (725, 299895), (2175, 99965), (3625, 59979), (10875, 19993)]