20315400

素因数分解:

$2^3\times 3^1\times 5^2\times 7^2\times {\mathrm{691}}^1$

素因数の和:724

約数の個数: 144

約数和(自身を含む): 73365840

約数和(自身を除く): 53050440

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 25, 28, 30, 35, 40, 42, 49, 50, 56, 60, 70, 75, 84, 98, 100, 105, 120, 140, 147, 150, 168, 175, 196, 200, 210, 245, 280, 294, 300, 350, 392, 420, 490, 525, 588, 600, 691, 700, 735, 840, 980, 1050, 1176, 1225, 1382, 1400, 1470, 1960, 2073, 2100, 2450, 2764, 2940, 3455, 3675, 4146, 4200, 4837, 4900, 5528, 5880, 6910, 7350, 8292, 9674, 9800, 10365, 13820, 14511, 14700, 16584, 17275, 19348, 20730, 24185, 27640, 29022, 29400, 33859, 34550, 38696, 41460, 48370, 51825, 58044, 67718, 69100, 72555, 82920, 96740, 101577, 103650, 116088, 120925, 135436, 138200, 145110, 169295, 193480, 203154, 207300, 241850, 270872, 290220, 338590, 362775, 406308, 414600, 483700, 507885, 580440, 677180, 725550, 812616, 846475, 967400, 1015770, 1354360, 1451100, 1692950, 2031540, 2539425, 2902200, 3385900, 4063080, 5078850, 6771800, 10157700, 20315400]

約数ペア:

[(1, 20315400), (2, 10157700), (3, 6771800), (4, 5078850), (5, 4063080), (6, 3385900), (7, 2902200), (8, 2539425), (10, 2031540), (12, 1692950), (14, 1451100), (15, 1354360), (20, 1015770), (21, 967400), (24, 846475), (25, 812616), (28, 725550), (30, 677180), (35, 580440), (40, 507885), (42, 483700), (49, 414600), (50, 406308), (56, 362775), (60, 338590), (70, 290220), (75, 270872), (84, 241850), (98, 207300), (100, 203154), (105, 193480), (120, 169295), (140, 145110), (147, 138200), (150, 135436), (168, 120925), (175, 116088), (196, 103650), (200, 101577), (210, 96740), (245, 82920), (280, 72555), (294, 69100), (300, 67718), (350, 58044), (392, 51825), (420, 48370), (490, 41460), (525, 38696), (588, 34550), (600, 33859), (691, 29400), (700, 29022), (735, 27640), (840, 24185), (980, 20730), (1050, 19348), (1176, 17275), (1225, 16584), (1382, 14700), (1400, 14511), (1470, 13820), (1960, 10365), (2073, 9800), (2100, 9674), (2450, 8292), (2764, 7350), (2940, 6910), (3455, 5880), (3675, 5528), (4146, 4900), (4200, 4837)]