31321160

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1$

素因数の和:151

約数の個数: 128

約数和(自身を含む): 82252800

約数和(自身を除く): 50931640

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 29, 31, 40, 52, 58, 62, 65, 67, 104, 116, 124, 130, 134, 145, 155, 232, 248, 260, 268, 290, 310, 335, 377, 403, 520, 536, 580, 620, 670, 754, 806, 871, 899, 1160, 1240, 1340, 1508, 1612, 1742, 1798, 1885, 1943, 2015, 2077, 2680, 3016, 3224, 3484, 3596, 3770, 3886, 4030, 4154, 4355, 4495, 6968, 7192, 7540, 7772, 8060, 8308, 8710, 8990, 9715, 10385, 11687, 15080, 15544, 16120, 16616, 17420, 17980, 19430, 20770, 23374, 25259, 27001, 34840, 35960, 38860, 41540, 46748, 50518, 54002, 58435, 60233, 77720, 83080, 93496, 101036, 108004, 116870, 120466, 126295, 135005, 202072, 216008, 233740, 240932, 252590, 270010, 301165, 467480, 481864, 505180, 540020, 602330, 783029, 1010360, 1080040, 1204660, 1566058, 2409320, 3132116, 3915145, 6264232, 7830290, 15660580, 31321160]

約数ペア:

[(1, 31321160), (2, 15660580), (4, 7830290), (5, 6264232), (8, 3915145), (10, 3132116), (13, 2409320), (20, 1566058), (26, 1204660), (29, 1080040), (31, 1010360), (40, 783029), (52, 602330), (58, 540020), (62, 505180), (65, 481864), (67, 467480), (104, 301165), (116, 270010), (124, 252590), (130, 240932), (134, 233740), (145, 216008), (155, 202072), (232, 135005), (248, 126295), (260, 120466), (268, 116870), (290, 108004), (310, 101036), (335, 93496), (377, 83080), (403, 77720), (520, 60233), (536, 58435), (580, 54002), (620, 50518), (670, 46748), (754, 41540), (806, 38860), (871, 35960), (899, 34840), (1160, 27001), (1240, 25259), (1340, 23374), (1508, 20770), (1612, 19430), (1742, 17980), (1798, 17420), (1885, 16616), (1943, 16120), (2015, 15544), (2077, 15080), (2680, 11687), (3016, 10385), (3224, 9715), (3484, 8990), (3596, 8710), (3770, 8308), (3886, 8060), (4030, 7772), (4154, 7540), (4355, 7192), (4495, 6968)]