18914252048

素因数分解:

$2^4\times {\mathrm{79}}^1\times {\mathrm{271}}^1\times {\mathrm{55217}}^1$

素因数の和:55575

約数の個数: 40

約数和(自身を含む): 37247854080

約数和(自身を除く): 18333602032

約数列:

[1, 2, 4, 8, 16, 79, 158, 271, 316, 542, 632, 1084, 1264, 2168, 4336, 21409, 42818, 55217, 85636, 110434, 171272, 220868, 342544, 441736, 883472, 4362143, 8724286, 14963807, 17448572, 29927614, 34897144, 59855228, 69794288, 119710456, 239420912, 1182140753, 2364281506, 4728563012, 9457126024, 18914252048]

約数ペア:

[(1, 18914252048), (2, 9457126024), (4, 4728563012), (8, 2364281506), (16, 1182140753), (79, 239420912), (158, 119710456), (271, 69794288), (316, 59855228), (542, 34897144), (632, 29927614), (1084, 17448572), (1264, 14963807), (2168, 8724286), (4336, 4362143), (21409, 883472), (42818, 441736), (55217, 342544), (85636, 220868), (110434, 171272)]