20180772880

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{461}}^1\times {\mathrm{18869}}^1$

素因数の和:19372

約数の個数: 80

約数和(自身を含む): 48646105200

約数和(自身を除く): 28465332320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 461, 464, 580, 922, 1160, 1844, 2305, 2320, 3688, 4610, 7376, 9220, 13369, 18440, 18869, 26738, 36880, 37738, 53476, 66845, 75476, 94345, 106952, 133690, 150952, 188690, 213904, 267380, 301904, 377380, 534760, 547201, 754760, 1069520, 1094402, 1509520, 2188804, 2736005, 4377608, 5472010, 8698609, 8755216, 10944020, 17397218, 21888040, 34794436, 43493045, 43776080, 69588872, 86986090, 139177744, 173972180, 252259661, 347944360, 504519322, 695888720, 1009038644, 1261298305, 2018077288, 2522596610, 4036154576, 5045193220, 10090386440, 20180772880]

約数ペア:

[(1, 20180772880), (2, 10090386440), (4, 5045193220), (5, 4036154576), (8, 2522596610), (10, 2018077288), (16, 1261298305), (20, 1009038644), (29, 695888720), (40, 504519322), (58, 347944360), (80, 252259661), (116, 173972180), (145, 139177744), (232, 86986090), (290, 69588872), (461, 43776080), (464, 43493045), (580, 34794436), (922, 21888040), (1160, 17397218), (1844, 10944020), (2305, 8755216), (2320, 8698609), (3688, 5472010), (4610, 4377608), (7376, 2736005), (9220, 2188804), (13369, 1509520), (18440, 1094402), (18869, 1069520), (26738, 754760), (36880, 547201), (37738, 534760), (53476, 377380), (66845, 301904), (75476, 267380), (94345, 213904), (106952, 188690), (133690, 150952)]