20950020

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1279}}^1$

素因数の和:1314

約数の個数: 144

約数和(自身を含む): 78274560

約数和(自身を除く): 57324540

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 26, 28, 30, 35, 36, 39, 42, 45, 52, 60, 63, 65, 70, 78, 84, 90, 91, 105, 117, 126, 130, 140, 156, 180, 182, 195, 210, 234, 252, 260, 273, 315, 364, 390, 420, 455, 468, 546, 585, 630, 780, 819, 910, 1092, 1170, 1260, 1279, 1365, 1638, 1820, 2340, 2558, 2730, 3276, 3837, 4095, 5116, 5460, 6395, 7674, 8190, 8953, 11511, 12790, 15348, 16380, 16627, 17906, 19185, 23022, 25580, 26859, 33254, 35812, 38370, 44765, 46044, 49881, 53718, 57555, 66508, 76740, 80577, 83135, 89530, 99762, 107436, 115110, 116389, 134295, 149643, 161154, 166270, 179060, 199524, 230220, 232778, 249405, 268590, 299286, 322308, 332540, 349167, 402885, 465556, 498810, 537180, 581945, 598572, 698334, 748215, 805770, 997620, 1047501, 1163890, 1396668, 1496430, 1611540, 1745835, 2095002, 2327780, 2992860, 3491670, 4190004, 5237505, 6983340, 10475010, 20950020]

約数ペア:

[(1, 20950020), (2, 10475010), (3, 6983340), (4, 5237505), (5, 4190004), (6, 3491670), (7, 2992860), (9, 2327780), (10, 2095002), (12, 1745835), (13, 1611540), (14, 1496430), (15, 1396668), (18, 1163890), (20, 1047501), (21, 997620), (26, 805770), (28, 748215), (30, 698334), (35, 598572), (36, 581945), (39, 537180), (42, 498810), (45, 465556), (52, 402885), (60, 349167), (63, 332540), (65, 322308), (70, 299286), (78, 268590), (84, 249405), (90, 232778), (91, 230220), (105, 199524), (117, 179060), (126, 166270), (130, 161154), (140, 149643), (156, 134295), (180, 116389), (182, 115110), (195, 107436), (210, 99762), (234, 89530), (252, 83135), (260, 80577), (273, 76740), (315, 66508), (364, 57555), (390, 53718), (420, 49881), (455, 46044), (468, 44765), (546, 38370), (585, 35812), (630, 33254), (780, 26859), (819, 25580), (910, 23022), (1092, 19185), (1170, 17906), (1260, 16627), (1279, 16380), (1365, 15348), (1638, 12790), (1820, 11511), (2340, 8953), (2558, 8190), (2730, 7674), (3276, 6395), (3837, 5460), (4095, 5116)]