20314920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1$

素因数の和:215

約数の個数: 128

約数和(自身を含む): 64880640

約数和(自身を除く): 44565720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 43, 60, 62, 86, 93, 120, 124, 127, 129, 155, 172, 186, 215, 248, 254, 258, 310, 344, 372, 381, 430, 465, 508, 516, 620, 635, 645, 744, 762, 860, 930, 1016, 1032, 1240, 1270, 1290, 1333, 1524, 1720, 1860, 1905, 2540, 2580, 2666, 3048, 3720, 3810, 3937, 3999, 5080, 5160, 5332, 5461, 6665, 7620, 7874, 7998, 10664, 10922, 11811, 13330, 15240, 15748, 15996, 16383, 19685, 19995, 21844, 23622, 26660, 27305, 31496, 31992, 32766, 39370, 39990, 43688, 47244, 53320, 54610, 59055, 65532, 78740, 79980, 81915, 94488, 109220, 118110, 131064, 157480, 159960, 163830, 169291, 218440, 236220, 327660, 338582, 472440, 507873, 655320, 677164, 846455, 1015746, 1354328, 1692910, 2031492, 2539365, 3385820, 4062984, 5078730, 6771640, 10157460, 20314920]

約数ペア:

[(1, 20314920), (2, 10157460), (3, 6771640), (4, 5078730), (5, 4062984), (6, 3385820), (8, 2539365), (10, 2031492), (12, 1692910), (15, 1354328), (20, 1015746), (24, 846455), (30, 677164), (31, 655320), (40, 507873), (43, 472440), (60, 338582), (62, 327660), (86, 236220), (93, 218440), (120, 169291), (124, 163830), (127, 159960), (129, 157480), (155, 131064), (172, 118110), (186, 109220), (215, 94488), (248, 81915), (254, 79980), (258, 78740), (310, 65532), (344, 59055), (372, 54610), (381, 53320), (430, 47244), (465, 43688), (508, 39990), (516, 39370), (620, 32766), (635, 31992), (645, 31496), (744, 27305), (762, 26660), (860, 23622), (930, 21844), (1016, 19995), (1032, 19685), (1240, 16383), (1270, 15996), (1290, 15748), (1333, 15240), (1524, 13330), (1720, 11811), (1860, 10922), (1905, 10664), (2540, 7998), (2580, 7874), (2666, 7620), (3048, 6665), (3720, 5461), (3810, 5332), (3937, 5160), (3999, 5080)]