20439780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{691}}^1$

素因数の和:749

約数の個数: 96

約数和(自身を含む): 62778240

約数和(自身を除く): 42338460

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 29, 30, 34, 51, 58, 60, 68, 85, 87, 102, 116, 145, 170, 174, 204, 255, 290, 340, 348, 435, 493, 510, 580, 691, 870, 986, 1020, 1382, 1479, 1740, 1972, 2073, 2465, 2764, 2958, 3455, 4146, 4930, 5916, 6910, 7395, 8292, 9860, 10365, 11747, 13820, 14790, 20039, 20730, 23494, 29580, 35241, 40078, 41460, 46988, 58735, 60117, 70482, 80156, 100195, 117470, 120234, 140964, 176205, 200390, 234940, 240468, 300585, 340663, 352410, 400780, 601170, 681326, 704820, 1021989, 1202340, 1362652, 1703315, 2043978, 3406630, 4087956, 5109945, 6813260, 10219890, 20439780]

約数ペア:

[(1, 20439780), (2, 10219890), (3, 6813260), (4, 5109945), (5, 4087956), (6, 3406630), (10, 2043978), (12, 1703315), (15, 1362652), (17, 1202340), (20, 1021989), (29, 704820), (30, 681326), (34, 601170), (51, 400780), (58, 352410), (60, 340663), (68, 300585), (85, 240468), (87, 234940), (102, 200390), (116, 176205), (145, 140964), (170, 120234), (174, 117470), (204, 100195), (255, 80156), (290, 70482), (340, 60117), (348, 58735), (435, 46988), (493, 41460), (510, 40078), (580, 35241), (691, 29580), (870, 23494), (986, 20730), (1020, 20039), (1382, 14790), (1479, 13820), (1740, 11747), (1972, 10365), (2073, 9860), (2465, 8292), (2764, 7395), (2958, 6910), (3455, 5916), (4146, 4930)]