20528172

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{53}}^2$

素因数の和:152

約数の個数: 108

約数和(自身を含む): 62527920

約数和(自身を除く): 41999748

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 29, 36, 42, 53, 58, 63, 84, 87, 106, 116, 126, 159, 174, 203, 212, 252, 261, 318, 348, 371, 406, 477, 522, 609, 636, 742, 812, 954, 1044, 1113, 1218, 1484, 1537, 1827, 1908, 2226, 2436, 2809, 3074, 3339, 3654, 4452, 4611, 5618, 6148, 6678, 7308, 8427, 9222, 10759, 11236, 13356, 13833, 16854, 18444, 19663, 21518, 25281, 27666, 32277, 33708, 39326, 43036, 50562, 55332, 58989, 64554, 78652, 81461, 96831, 101124, 117978, 129108, 162922, 176967, 193662, 235956, 244383, 325844, 353934, 387324, 488766, 570227, 707868, 733149, 977532, 1140454, 1466298, 1710681, 2280908, 2932596, 3421362, 5132043, 6842724, 10264086, 20528172]

約数ペア:

[(1, 20528172), (2, 10264086), (3, 6842724), (4, 5132043), (6, 3421362), (7, 2932596), (9, 2280908), (12, 1710681), (14, 1466298), (18, 1140454), (21, 977532), (28, 733149), (29, 707868), (36, 570227), (42, 488766), (53, 387324), (58, 353934), (63, 325844), (84, 244383), (87, 235956), (106, 193662), (116, 176967), (126, 162922), (159, 129108), (174, 117978), (203, 101124), (212, 96831), (252, 81461), (261, 78652), (318, 64554), (348, 58989), (371, 55332), (406, 50562), (477, 43036), (522, 39326), (609, 33708), (636, 32277), (742, 27666), (812, 25281), (954, 21518), (1044, 19663), (1113, 18444), (1218, 16854), (1484, 13833), (1537, 13356), (1827, 11236), (1908, 10759), (2226, 9222), (2436, 8427), (2809, 7308), (3074, 6678), (3339, 6148), (3654, 5618), (4452, 4611)]