20456520

素因数分解:

$2^3\times 3^1\times 5^1\times 7^4\times {\mathrm{71}}^1$

素因数の和:113

約数の個数: 160

約数和(自身を含む): 72601920

約数和(自身を除く): 52145400

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 49, 56, 60, 70, 71, 84, 98, 105, 120, 140, 142, 147, 168, 196, 210, 213, 245, 280, 284, 294, 343, 355, 392, 420, 426, 490, 497, 568, 588, 686, 710, 735, 840, 852, 980, 994, 1029, 1065, 1176, 1372, 1420, 1470, 1491, 1704, 1715, 1960, 1988, 2058, 2130, 2401, 2485, 2744, 2840, 2940, 2982, 3430, 3479, 3976, 4116, 4260, 4802, 4970, 5145, 5880, 5964, 6860, 6958, 7203, 7455, 8232, 8520, 9604, 9940, 10290, 10437, 11928, 12005, 13720, 13916, 14406, 14910, 17395, 19208, 19880, 20580, 20874, 24010, 24353, 27832, 28812, 29820, 34790, 36015, 41160, 41748, 48020, 48706, 52185, 57624, 59640, 69580, 72030, 73059, 83496, 96040, 97412, 104370, 121765, 139160, 144060, 146118, 170471, 194824, 208740, 243530, 288120, 292236, 340942, 365295, 417480, 487060, 511413, 584472, 681884, 730590, 852355, 974120, 1022826, 1363768, 1461180, 1704710, 2045652, 2557065, 2922360, 3409420, 4091304, 5114130, 6818840, 10228260, 20456520]

約数ペア:

[(1, 20456520), (2, 10228260), (3, 6818840), (4, 5114130), (5, 4091304), (6, 3409420), (7, 2922360), (8, 2557065), (10, 2045652), (12, 1704710), (14, 1461180), (15, 1363768), (20, 1022826), (21, 974120), (24, 852355), (28, 730590), (30, 681884), (35, 584472), (40, 511413), (42, 487060), (49, 417480), (56, 365295), (60, 340942), (70, 292236), (71, 288120), (84, 243530), (98, 208740), (105, 194824), (120, 170471), (140, 146118), (142, 144060), (147, 139160), (168, 121765), (196, 104370), (210, 97412), (213, 96040), (245, 83496), (280, 73059), (284, 72030), (294, 69580), (343, 59640), (355, 57624), (392, 52185), (420, 48706), (426, 48020), (490, 41748), (497, 41160), (568, 36015), (588, 34790), (686, 29820), (710, 28812), (735, 27832), (840, 24353), (852, 24010), (980, 20874), (994, 20580), (1029, 19880), (1065, 19208), (1176, 17395), (1372, 14910), (1420, 14406), (1470, 13916), (1491, 13720), (1704, 12005), (1715, 11928), (1960, 10437), (1988, 10290), (2058, 9940), (2130, 9604), (2401, 8520), (2485, 8232), (2744, 7455), (2840, 7203), (2940, 6958), (2982, 6860), (3430, 5964), (3479, 5880), (3976, 5145), (4116, 4970), (4260, 4802)]