21998124

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1109}}^1$

素因数の和:1167

約数の個数: 72

約数和(自身を含む): 60606000

約数和(自身を除く): 38607876

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 29, 36, 38, 57, 58, 76, 87, 114, 116, 171, 174, 228, 261, 342, 348, 522, 551, 684, 1044, 1102, 1109, 1653, 2204, 2218, 3306, 3327, 4436, 4959, 6612, 6654, 9918, 9981, 13308, 19836, 19962, 21071, 32161, 39924, 42142, 63213, 64322, 84284, 96483, 126426, 128644, 189639, 192966, 252852, 289449, 379278, 385932, 578898, 611059, 758556, 1157796, 1222118, 1833177, 2444236, 3666354, 5499531, 7332708, 10999062, 21998124]

約数ペア:

[(1, 21998124), (2, 10999062), (3, 7332708), (4, 5499531), (6, 3666354), (9, 2444236), (12, 1833177), (18, 1222118), (19, 1157796), (29, 758556), (36, 611059), (38, 578898), (57, 385932), (58, 379278), (76, 289449), (87, 252852), (114, 192966), (116, 189639), (171, 128644), (174, 126426), (228, 96483), (261, 84284), (342, 64322), (348, 63213), (522, 42142), (551, 39924), (684, 32161), (1044, 21071), (1102, 19962), (1109, 19836), (1653, 13308), (2204, 9981), (2218, 9918), (3306, 6654), (3327, 6612), (4436, 4959)]