397866875

素因数分解:

$5^4\times 7^1\times {\mathrm{211}}^1\times {\mathrm{431}}^1$

素因数の和:669

約数の個数: 40

約数和(自身を含む): 572216832

約数和(自身を除く): 174349957

約数列:

[1, 5, 7, 25, 35, 125, 175, 211, 431, 625, 875, 1055, 1477, 2155, 3017, 4375, 5275, 7385, 10775, 15085, 26375, 36925, 53875, 75425, 90941, 131875, 184625, 269375, 377125, 454705, 636587, 923125, 1885625, 2273525, 3182935, 11367625, 15914675, 56838125, 79573375, 397866875]

約数ペア:

[(1, 397866875), (5, 79573375), (7, 56838125), (25, 15914675), (35, 11367625), (125, 3182935), (175, 2273525), (211, 1885625), (431, 923125), (625, 636587), (875, 454705), (1055, 377125), (1477, 269375), (2155, 184625), (3017, 131875), (4375, 90941), (5275, 75425), (7385, 53875), (10775, 36925), (15085, 26375)]