81259400

素因数分解:

$2^3\times 5^2\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1$

素因数の和:271

約数の個数: 96

約数和(自身を含む): 197904000

約数和(自身を除く): 116644600

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 37, 40, 50, 74, 79, 100, 139, 148, 158, 185, 200, 278, 296, 316, 370, 395, 556, 632, 695, 740, 790, 925, 1112, 1390, 1480, 1580, 1850, 1975, 2780, 2923, 3160, 3475, 3700, 3950, 5143, 5560, 5846, 6950, 7400, 7900, 10286, 10981, 11692, 13900, 14615, 15800, 20572, 21962, 23384, 25715, 27800, 29230, 41144, 43924, 51430, 54905, 58460, 73075, 87848, 102860, 109810, 116920, 128575, 146150, 205720, 219620, 257150, 274525, 292300, 406297, 439240, 514300, 549050, 584600, 812594, 1028600, 1098100, 1625188, 2031485, 2196200, 3250376, 4062970, 8125940, 10157425, 16251880, 20314850, 40629700, 81259400]

約数ペア:

[(1, 81259400), (2, 40629700), (4, 20314850), (5, 16251880), (8, 10157425), (10, 8125940), (20, 4062970), (25, 3250376), (37, 2196200), (40, 2031485), (50, 1625188), (74, 1098100), (79, 1028600), (100, 812594), (139, 584600), (148, 549050), (158, 514300), (185, 439240), (200, 406297), (278, 292300), (296, 274525), (316, 257150), (370, 219620), (395, 205720), (556, 146150), (632, 128575), (695, 116920), (740, 109810), (790, 102860), (925, 87848), (1112, 73075), (1390, 58460), (1480, 54905), (1580, 51430), (1850, 43924), (1975, 41144), (2780, 29230), (2923, 27800), (3160, 25715), (3475, 23384), (3700, 21962), (3950, 20572), (5143, 15800), (5560, 14615), (5846, 13900), (6950, 11692), (7400, 10981), (7900, 10286)]