19903728

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{191}}^1$

素因数の和:382

約数の個数: 80

約数和(自身を含む): 55996416

約数和(自身を除く): 36092688

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 156, 167, 191, 208, 312, 334, 382, 501, 573, 624, 668, 764, 1002, 1146, 1336, 1528, 2004, 2171, 2292, 2483, 2672, 3056, 4008, 4342, 4584, 4966, 6513, 7449, 8016, 8684, 9168, 9932, 13026, 14898, 17368, 19864, 26052, 29796, 31897, 34736, 39728, 52104, 59592, 63794, 95691, 104208, 119184, 127588, 191382, 255176, 382764, 414661, 510352, 765528, 829322, 1243983, 1531056, 1658644, 2487966, 3317288, 4975932, 6634576, 9951864, 19903728]

約数ペア:

[(1, 19903728), (2, 9951864), (3, 6634576), (4, 4975932), (6, 3317288), (8, 2487966), (12, 1658644), (13, 1531056), (16, 1243983), (24, 829322), (26, 765528), (39, 510352), (48, 414661), (52, 382764), (78, 255176), (104, 191382), (156, 127588), (167, 119184), (191, 104208), (208, 95691), (312, 63794), (334, 59592), (382, 52104), (501, 39728), (573, 34736), (624, 31897), (668, 29796), (764, 26052), (1002, 19864), (1146, 17368), (1336, 14898), (1528, 13026), (2004, 9932), (2171, 9168), (2292, 8684), (2483, 8016), (2672, 7449), (3056, 6513), (4008, 4966), (4342, 4584)]