20347625

素因数分解:

$5^3\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1$

素因数の和:194

約数の個数: 32

約数和(自身を含む): 26956800

約数和(自身を除く): 6609175

約数列:

[1, 5, 25, 31, 59, 89, 125, 155, 295, 445, 775, 1475, 1829, 2225, 2759, 3875, 5251, 7375, 9145, 11125, 13795, 26255, 45725, 68975, 131275, 162781, 228625, 344875, 656375, 813905, 4069525, 20347625]

約数ペア:

[(1, 20347625), (5, 4069525), (25, 813905), (31, 656375), (59, 344875), (89, 228625), (125, 162781), (155, 131275), (295, 68975), (445, 45725), (775, 26255), (1475, 13795), (1829, 11125), (2225, 9145), (2759, 7375), (3875, 5251)]