20939280

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2029}}^1$

素因数の和:2088

約数の個数: 80

約数和(自身を含む): 66454080

約数和(自身を除く): 45514800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 43, 48, 60, 80, 86, 120, 129, 172, 215, 240, 258, 344, 430, 516, 645, 688, 860, 1032, 1290, 1720, 2029, 2064, 2580, 3440, 4058, 5160, 6087, 8116, 10145, 10320, 12174, 16232, 20290, 24348, 30435, 32464, 40580, 48696, 60870, 81160, 87247, 97392, 121740, 162320, 174494, 243480, 261741, 348988, 436235, 486960, 523482, 697976, 872470, 1046964, 1308705, 1395952, 1744940, 2093928, 2617410, 3489880, 4187856, 5234820, 6979760, 10469640, 20939280]

約数ペア:

[(1, 20939280), (2, 10469640), (3, 6979760), (4, 5234820), (5, 4187856), (6, 3489880), (8, 2617410), (10, 2093928), (12, 1744940), (15, 1395952), (16, 1308705), (20, 1046964), (24, 872470), (30, 697976), (40, 523482), (43, 486960), (48, 436235), (60, 348988), (80, 261741), (86, 243480), (120, 174494), (129, 162320), (172, 121740), (215, 97392), (240, 87247), (258, 81160), (344, 60870), (430, 48696), (516, 40580), (645, 32464), (688, 30435), (860, 24348), (1032, 20290), (1290, 16232), (1720, 12174), (2029, 10320), (2064, 10145), (2580, 8116), (3440, 6087), (4058, 5160)]