19859375

素因数分解:

$5^6\times {\mathrm{31}}^1\times {\mathrm{41}}^1$

素因数の和:102

約数の個数: 28

約数和(自身を含む): 26249664

約数和(自身を除く): 6390289

約数列:

[1, 5, 25, 31, 41, 125, 155, 205, 625, 775, 1025, 1271, 3125, 3875, 5125, 6355, 15625, 19375, 25625, 31775, 96875, 128125, 158875, 484375, 640625, 794375, 3971875, 19859375]

約数ペア:

[(1, 19859375), (5, 3971875), (25, 794375), (31, 640625), (41, 484375), (125, 158875), (155, 128125), (205, 96875), (625, 31775), (775, 25625), (1025, 19375), (1271, 15625), (3125, 6355), (3875, 5125)]