20321784

素因数分解:

$2^3\times 3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{661}}^1$

素因数の和:741

約数の個数: 96

約数和(自身を含む): 64028640

約数和(自身を除く): 43706856

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 28, 36, 42, 56, 61, 63, 72, 84, 122, 126, 168, 183, 244, 252, 366, 427, 488, 504, 549, 661, 732, 854, 1098, 1281, 1322, 1464, 1708, 1983, 2196, 2562, 2644, 3416, 3843, 3966, 4392, 4627, 5124, 5288, 5949, 7686, 7932, 9254, 10248, 11898, 13881, 15372, 15864, 18508, 23796, 27762, 30744, 37016, 40321, 41643, 47592, 55524, 80642, 83286, 111048, 120963, 161284, 166572, 241926, 282247, 322568, 333144, 362889, 483852, 564494, 725778, 846741, 967704, 1128988, 1451556, 1693482, 2257976, 2540223, 2903112, 3386964, 5080446, 6773928, 10160892, 20321784]

約数ペア:

[(1, 20321784), (2, 10160892), (3, 6773928), (4, 5080446), (6, 3386964), (7, 2903112), (8, 2540223), (9, 2257976), (12, 1693482), (14, 1451556), (18, 1128988), (21, 967704), (24, 846741), (28, 725778), (36, 564494), (42, 483852), (56, 362889), (61, 333144), (63, 322568), (72, 282247), (84, 241926), (122, 166572), (126, 161284), (168, 120963), (183, 111048), (244, 83286), (252, 80642), (366, 55524), (427, 47592), (488, 41643), (504, 40321), (549, 37016), (661, 30744), (732, 27762), (854, 23796), (1098, 18508), (1281, 15864), (1322, 15372), (1464, 13881), (1708, 11898), (1983, 10248), (2196, 9254), (2562, 7932), (2644, 7686), (3416, 5949), (3843, 5288), (3966, 5124), (4392, 4627)]