387500

素因数分解:

$2^2\times 5^5\times {\mathrm{31}}^1$

素因数の和:60

約数の個数: 36

約数和(自身を含む): 874944

約数和(自身を除く): 487444

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 125, 155, 250, 310, 500, 620, 625, 775, 1250, 1550, 2500, 3100, 3125, 3875, 6250, 7750, 12500, 15500, 19375, 38750, 77500, 96875, 193750, 387500]

約数ペア:

[(1, 387500), (2, 193750), (4, 96875), (5, 77500), (10, 38750), (20, 19375), (25, 15500), (31, 12500), (50, 7750), (62, 6250), (100, 3875), (124, 3125), (125, 3100), (155, 2500), (250, 1550), (310, 1250), (500, 775), (620, 625)]