21311080

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{83}}^1\times {\mathrm{131}}^1$

素因数の和:239

約数の個数: 96

約数和(自身を含む): 56881440

約数和(自身を除く): 35570360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 83, 98, 131, 140, 166, 196, 245, 262, 280, 332, 392, 415, 490, 524, 581, 655, 664, 830, 917, 980, 1048, 1162, 1310, 1660, 1834, 1960, 2324, 2620, 2905, 3320, 3668, 4067, 4585, 4648, 5240, 5810, 6419, 7336, 8134, 9170, 10873, 11620, 12838, 16268, 18340, 20335, 21746, 23240, 25676, 32095, 32536, 36680, 40670, 43492, 51352, 54365, 64190, 76111, 81340, 86984, 108730, 128380, 152222, 162680, 217460, 256760, 304444, 380555, 434920, 532777, 608888, 761110, 1065554, 1522220, 2131108, 2663885, 3044440, 4262216, 5327770, 10655540, 21311080]

約数ペア:

[(1, 21311080), (2, 10655540), (4, 5327770), (5, 4262216), (7, 3044440), (8, 2663885), (10, 2131108), (14, 1522220), (20, 1065554), (28, 761110), (35, 608888), (40, 532777), (49, 434920), (56, 380555), (70, 304444), (83, 256760), (98, 217460), (131, 162680), (140, 152222), (166, 128380), (196, 108730), (245, 86984), (262, 81340), (280, 76111), (332, 64190), (392, 54365), (415, 51352), (490, 43492), (524, 40670), (581, 36680), (655, 32536), (664, 32095), (830, 25676), (917, 23240), (980, 21746), (1048, 20335), (1162, 18340), (1310, 16268), (1660, 12838), (1834, 11620), (1960, 10873), (2324, 9170), (2620, 8134), (2905, 7336), (3320, 6419), (3668, 5810), (4067, 5240), (4585, 4648)]