20219188868

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^2\times {\mathrm{661}}^1$

素因数の和:885

約数の個数: 72

約数和(自身を含む): 37815052632

約数和(自身を除く): 17595863764

約数列:

[1, 2, 4, 37, 41, 71, 74, 82, 142, 148, 164, 284, 661, 1322, 1517, 2627, 2644, 2911, 3034, 5041, 5254, 5822, 6068, 10082, 10508, 11644, 20164, 24457, 27101, 46931, 48914, 54202, 93862, 97828, 107707, 108404, 186517, 187724, 206681, 215414, 373034, 413362, 430828, 746068, 826724, 1002737, 1736447, 1924171, 2005474, 3332101, 3472894, 3848342, 4010948, 6664202, 6945788, 7647197, 7696684, 13328404, 15294394, 30588788, 71194327, 123287737, 136616141, 142388654, 246575474, 273232282, 284777308, 493150948, 546464564, 5054797217, 10109594434, 20219188868]

約数ペア:

[(1, 20219188868), (2, 10109594434), (4, 5054797217), (37, 546464564), (41, 493150948), (71, 284777308), (74, 273232282), (82, 246575474), (142, 142388654), (148, 136616141), (164, 123287737), (284, 71194327), (661, 30588788), (1322, 15294394), (1517, 13328404), (2627, 7696684), (2644, 7647197), (2911, 6945788), (3034, 6664202), (5041, 4010948), (5254, 3848342), (5822, 3472894), (6068, 3332101), (10082, 2005474), (10508, 1924171), (11644, 1736447), (20164, 1002737), (24457, 826724), (27101, 746068), (46931, 430828), (48914, 413362), (54202, 373034), (93862, 215414), (97828, 206681), (107707, 187724), (108404, 186517)]