20921544

素因数分解:

$2^3\times 3^3\times 7^1\times {\mathrm{101}}^1\times {\mathrm{137}}^1$

素因数の和:260

約数の個数: 128

約数和(自身を含む): 67564800

約数和(自身を除く): 46643256

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 27, 28, 36, 42, 54, 56, 63, 72, 84, 101, 108, 126, 137, 168, 189, 202, 216, 252, 274, 303, 378, 404, 411, 504, 548, 606, 707, 756, 808, 822, 909, 959, 1096, 1212, 1233, 1414, 1512, 1644, 1818, 1918, 2121, 2424, 2466, 2727, 2828, 2877, 3288, 3636, 3699, 3836, 4242, 4932, 5454, 5656, 5754, 6363, 7272, 7398, 7672, 8484, 8631, 9864, 10908, 11508, 12726, 13837, 14796, 16968, 17262, 19089, 21816, 23016, 25452, 25893, 27674, 29592, 34524, 38178, 41511, 50904, 51786, 55348, 69048, 76356, 83022, 96859, 103572, 110696, 124533, 152712, 166044, 193718, 207144, 249066, 290577, 332088, 373599, 387436, 498132, 581154, 747198, 774872, 871731, 996264, 1162308, 1494396, 1743462, 2324616, 2615193, 2988792, 3486924, 5230386, 6973848, 10460772, 20921544]

約数ペア:

[(1, 20921544), (2, 10460772), (3, 6973848), (4, 5230386), (6, 3486924), (7, 2988792), (8, 2615193), (9, 2324616), (12, 1743462), (14, 1494396), (18, 1162308), (21, 996264), (24, 871731), (27, 774872), (28, 747198), (36, 581154), (42, 498132), (54, 387436), (56, 373599), (63, 332088), (72, 290577), (84, 249066), (101, 207144), (108, 193718), (126, 166044), (137, 152712), (168, 124533), (189, 110696), (202, 103572), (216, 96859), (252, 83022), (274, 76356), (303, 69048), (378, 55348), (404, 51786), (411, 50904), (504, 41511), (548, 38178), (606, 34524), (707, 29592), (756, 27674), (808, 25893), (822, 25452), (909, 23016), (959, 21816), (1096, 19089), (1212, 17262), (1233, 16968), (1414, 14796), (1512, 13837), (1644, 12726), (1818, 11508), (1918, 10908), (2121, 9864), (2424, 8631), (2466, 8484), (2727, 7672), (2828, 7398), (2877, 7272), (3288, 6363), (3636, 5754), (3699, 5656), (3836, 5454), (4242, 4932)]