20277850

素因数分解:

$2^1\times 5^2\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{113}}^1$

素因数の和:259

約数の個数: 48

約数和(自身を含む): 39481848

約数和(自身を除く): 19203998

約数列:

[1, 2, 5, 10, 25, 37, 50, 74, 97, 113, 185, 194, 226, 370, 485, 565, 925, 970, 1130, 1850, 2425, 2825, 3589, 4181, 4850, 5650, 7178, 8362, 10961, 17945, 20905, 21922, 35890, 41810, 54805, 89725, 104525, 109610, 179450, 209050, 274025, 405557, 548050, 811114, 2027785, 4055570, 10138925, 20277850]

約数ペア:

[(1, 20277850), (2, 10138925), (5, 4055570), (10, 2027785), (25, 811114), (37, 548050), (50, 405557), (74, 274025), (97, 209050), (113, 179450), (185, 109610), (194, 104525), (226, 89725), (370, 54805), (485, 41810), (565, 35890), (925, 21922), (970, 20905), (1130, 17945), (1850, 10961), (2425, 8362), (2825, 7178), (3589, 5650), (4181, 4850)]