31021320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{331}}^1$

素因数の和:427

約数の個数: 128

約数和(自身を含む): 103265280

約数和(自身を除く): 72243960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 71, 88, 110, 120, 132, 142, 165, 213, 220, 264, 284, 330, 331, 355, 426, 440, 568, 660, 662, 710, 781, 852, 993, 1065, 1320, 1324, 1420, 1562, 1655, 1704, 1986, 2130, 2343, 2648, 2840, 3124, 3310, 3641, 3905, 3972, 4260, 4686, 4965, 6248, 6620, 7282, 7810, 7944, 8520, 9372, 9930, 10923, 11715, 13240, 14564, 15620, 18205, 18744, 19860, 21846, 23430, 23501, 29128, 31240, 36410, 39720, 43692, 46860, 47002, 54615, 70503, 72820, 87384, 93720, 94004, 109230, 117505, 141006, 145640, 188008, 218460, 235010, 258511, 282012, 352515, 436920, 470020, 517022, 564024, 705030, 775533, 940040, 1034044, 1292555, 1410060, 1551066, 2068088, 2585110, 2820120, 3102132, 3877665, 5170220, 6204264, 7755330, 10340440, 15510660, 31021320]

約数ペア:

[(1, 31021320), (2, 15510660), (3, 10340440), (4, 7755330), (5, 6204264), (6, 5170220), (8, 3877665), (10, 3102132), (11, 2820120), (12, 2585110), (15, 2068088), (20, 1551066), (22, 1410060), (24, 1292555), (30, 1034044), (33, 940040), (40, 775533), (44, 705030), (55, 564024), (60, 517022), (66, 470020), (71, 436920), (88, 352515), (110, 282012), (120, 258511), (132, 235010), (142, 218460), (165, 188008), (213, 145640), (220, 141006), (264, 117505), (284, 109230), (330, 94004), (331, 93720), (355, 87384), (426, 72820), (440, 70503), (568, 54615), (660, 47002), (662, 46860), (710, 43692), (781, 39720), (852, 36410), (993, 31240), (1065, 29128), (1320, 23501), (1324, 23430), (1420, 21846), (1562, 19860), (1655, 18744), (1704, 18205), (1986, 15620), (2130, 14564), (2343, 13240), (2648, 11715), (2840, 10923), (3124, 9930), (3310, 9372), (3641, 8520), (3905, 7944), (3972, 7810), (4260, 7282), (4686, 6620), (4965, 6248)]