18915528080

素因数分解:

$2^4\times 5^1\times {\mathrm{181}}^1\times {\mathrm{263}}^1\times {\mathrm{4967}}^1$

素因数の和:5424

約数の個数: 80

約数和(自身を含む): 44398658304

約数和(自身を除く): 25483130224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 181, 263, 362, 526, 724, 905, 1052, 1315, 1448, 1810, 2104, 2630, 2896, 3620, 4208, 4967, 5260, 7240, 9934, 10520, 14480, 19868, 21040, 24835, 39736, 47603, 49670, 79472, 95206, 99340, 190412, 198680, 238015, 380824, 397360, 476030, 761648, 899027, 952060, 1306321, 1798054, 1904120, 2612642, 3596108, 3808240, 4495135, 5225284, 6531605, 7192216, 8990270, 10450568, 13063210, 14384432, 17980540, 20901136, 26126420, 35961080, 52252840, 71922160, 104505680, 236444101, 472888202, 945776404, 1182220505, 1891552808, 2364441010, 3783105616, 4728882020, 9457764040, 18915528080]

約数ペア:

[(1, 18915528080), (2, 9457764040), (4, 4728882020), (5, 3783105616), (8, 2364441010), (10, 1891552808), (16, 1182220505), (20, 945776404), (40, 472888202), (80, 236444101), (181, 104505680), (263, 71922160), (362, 52252840), (526, 35961080), (724, 26126420), (905, 20901136), (1052, 17980540), (1315, 14384432), (1448, 13063210), (1810, 10450568), (2104, 8990270), (2630, 7192216), (2896, 6531605), (3620, 5225284), (4208, 4495135), (4967, 3808240), (5260, 3596108), (7240, 2612642), (9934, 1904120), (10520, 1798054), (14480, 1306321), (19868, 952060), (21040, 899027), (24835, 761648), (39736, 476030), (47603, 397360), (49670, 380824), (79472, 238015), (95206, 198680), (99340, 190412)]