20010120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{127}}^1$

素因数の和:255

約数の個数: 128

約数和(自身を含む): 65802240

約数和(自身を除く): 45792120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 101, 104, 120, 127, 130, 156, 195, 202, 254, 260, 303, 312, 381, 390, 404, 505, 508, 520, 606, 635, 762, 780, 808, 1010, 1016, 1212, 1270, 1313, 1515, 1524, 1560, 1651, 1905, 2020, 2424, 2540, 2626, 3030, 3048, 3302, 3810, 3939, 4040, 4953, 5080, 5252, 6060, 6565, 6604, 7620, 7878, 8255, 9906, 10504, 12120, 12827, 13130, 13208, 15240, 15756, 16510, 19695, 19812, 24765, 25654, 26260, 31512, 33020, 38481, 39390, 39624, 49530, 51308, 52520, 64135, 66040, 76962, 78780, 99060, 102616, 128270, 153924, 157560, 166751, 192405, 198120, 256540, 307848, 333502, 384810, 500253, 513080, 667004, 769620, 833755, 1000506, 1334008, 1539240, 1667510, 2001012, 2501265, 3335020, 4002024, 5002530, 6670040, 10005060, 20010120]

約数ペア:

[(1, 20010120), (2, 10005060), (3, 6670040), (4, 5002530), (5, 4002024), (6, 3335020), (8, 2501265), (10, 2001012), (12, 1667510), (13, 1539240), (15, 1334008), (20, 1000506), (24, 833755), (26, 769620), (30, 667004), (39, 513080), (40, 500253), (52, 384810), (60, 333502), (65, 307848), (78, 256540), (101, 198120), (104, 192405), (120, 166751), (127, 157560), (130, 153924), (156, 128270), (195, 102616), (202, 99060), (254, 78780), (260, 76962), (303, 66040), (312, 64135), (381, 52520), (390, 51308), (404, 49530), (505, 39624), (508, 39390), (520, 38481), (606, 33020), (635, 31512), (762, 26260), (780, 25654), (808, 24765), (1010, 19812), (1016, 19695), (1212, 16510), (1270, 15756), (1313, 15240), (1515, 13208), (1524, 13130), (1560, 12827), (1651, 12120), (1905, 10504), (2020, 9906), (2424, 8255), (2540, 7878), (2626, 7620), (3030, 6604), (3048, 6565), (3302, 6060), (3810, 5252), (3939, 5080), (4040, 4953)]