20180899875

素因数分解:

$3^1\times 5^3\times {\mathrm{19}}^1\times {\mathrm{971}}^1\times {\mathrm{2917}}^1$

素因数の和:3925

約数の個数: 64

約数和(自身を含む): 35396974080

約数和(自身を除く): 15216074205

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 125, 285, 375, 475, 971, 1425, 2375, 2913, 2917, 4855, 7125, 8751, 14565, 14585, 18449, 24275, 43755, 55347, 55423, 72825, 72925, 92245, 121375, 166269, 218775, 276735, 277115, 364125, 364625, 461225, 831345, 1093875, 1383675, 1385575, 2306125, 2832407, 4156725, 6918375, 6927875, 8497221, 14162035, 20783625, 42486105, 53815733, 70810175, 161447199, 212430525, 269078665, 354050875, 807235995, 1062152625, 1345393325, 4036179975, 6726966625, 20180899875]

約数ペア:

[(1, 20180899875), (3, 6726966625), (5, 4036179975), (15, 1345393325), (19, 1062152625), (25, 807235995), (57, 354050875), (75, 269078665), (95, 212430525), (125, 161447199), (285, 70810175), (375, 53815733), (475, 42486105), (971, 20783625), (1425, 14162035), (2375, 8497221), (2913, 6927875), (2917, 6918375), (4855, 4156725), (7125, 2832407), (8751, 2306125), (14565, 1385575), (14585, 1383675), (18449, 1093875), (24275, 831345), (43755, 461225), (55347, 364625), (55423, 364125), (72825, 277115), (72925, 276735), (92245, 218775), (121375, 166269)]