20369475

素因数分解:

$3^5\times 5^2\times 7^1\times {\mathrm{479}}^1$

素因数の和:511

約数の個数: 72

約数和(自身を含む): 43330560

約数和(自身を除く): 22961085

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 45, 63, 75, 81, 105, 135, 175, 189, 225, 243, 315, 405, 479, 525, 567, 675, 945, 1215, 1437, 1575, 1701, 2025, 2395, 2835, 3353, 4311, 4725, 6075, 7185, 8505, 10059, 11975, 12933, 14175, 16765, 21555, 30177, 35925, 38799, 42525, 50295, 64665, 83825, 90531, 107775, 116397, 150885, 193995, 251475, 271593, 323325, 452655, 581985, 754425, 814779, 969975, 1357965, 2263275, 2909925, 4073895, 6789825, 20369475]

約数ペア:

[(1, 20369475), (3, 6789825), (5, 4073895), (7, 2909925), (9, 2263275), (15, 1357965), (21, 969975), (25, 814779), (27, 754425), (35, 581985), (45, 452655), (63, 323325), (75, 271593), (81, 251475), (105, 193995), (135, 150885), (175, 116397), (189, 107775), (225, 90531), (243, 83825), (315, 64665), (405, 50295), (479, 42525), (525, 38799), (567, 35925), (675, 30177), (945, 21555), (1215, 16765), (1437, 14175), (1575, 12933), (1701, 11975), (2025, 10059), (2395, 8505), (2835, 7185), (3353, 6075), (4311, 4725)]