18193750

素因数分解:

$2^1\times 5^5\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:139

約数の個数: 48

約数和(自身を含む): 35435232

約数和(自身を除く): 17241482

約数列:

[1, 2, 5, 10, 25, 41, 50, 71, 82, 125, 142, 205, 250, 355, 410, 625, 710, 1025, 1250, 1775, 2050, 2911, 3125, 3550, 5125, 5822, 6250, 8875, 10250, 14555, 17750, 25625, 29110, 44375, 51250, 72775, 88750, 128125, 145550, 221875, 256250, 363875, 443750, 727750, 1819375, 3638750, 9096875, 18193750]

約数ペア:

[(1, 18193750), (2, 9096875), (5, 3638750), (10, 1819375), (25, 727750), (41, 443750), (50, 363875), (71, 256250), (82, 221875), (125, 145550), (142, 128125), (205, 88750), (250, 72775), (355, 51250), (410, 44375), (625, 29110), (710, 25625), (1025, 17750), (1250, 14555), (1775, 10250), (2050, 8875), (2911, 6250), (3125, 5822), (3550, 5125)]