20494920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:223

約数の個数: 128

約数和(自身を含む): 66096000

約数和(自身を除く): 45601080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 38, 40, 57, 60, 76, 89, 95, 101, 114, 120, 152, 178, 190, 202, 228, 267, 285, 303, 356, 380, 404, 445, 456, 505, 534, 570, 606, 712, 760, 808, 890, 1010, 1068, 1140, 1212, 1335, 1515, 1691, 1780, 1919, 2020, 2136, 2280, 2424, 2670, 3030, 3382, 3560, 3838, 4040, 5073, 5340, 5757, 6060, 6764, 7676, 8455, 8989, 9595, 10146, 10680, 11514, 12120, 13528, 15352, 16910, 17978, 19190, 20292, 23028, 25365, 26967, 28785, 33820, 35956, 38380, 40584, 44945, 46056, 50730, 53934, 57570, 67640, 71912, 76760, 89890, 101460, 107868, 115140, 134835, 170791, 179780, 202920, 215736, 230280, 269670, 341582, 359560, 512373, 539340, 683164, 853955, 1024746, 1078680, 1366328, 1707910, 2049492, 2561865, 3415820, 4098984, 5123730, 6831640, 10247460, 20494920]

約数ペア:

[(1, 20494920), (2, 10247460), (3, 6831640), (4, 5123730), (5, 4098984), (6, 3415820), (8, 2561865), (10, 2049492), (12, 1707910), (15, 1366328), (19, 1078680), (20, 1024746), (24, 853955), (30, 683164), (38, 539340), (40, 512373), (57, 359560), (60, 341582), (76, 269670), (89, 230280), (95, 215736), (101, 202920), (114, 179780), (120, 170791), (152, 134835), (178, 115140), (190, 107868), (202, 101460), (228, 89890), (267, 76760), (285, 71912), (303, 67640), (356, 57570), (380, 53934), (404, 50730), (445, 46056), (456, 44945), (505, 40584), (534, 38380), (570, 35956), (606, 33820), (712, 28785), (760, 26967), (808, 25365), (890, 23028), (1010, 20292), (1068, 19190), (1140, 17978), (1212, 16910), (1335, 15352), (1515, 13528), (1691, 12120), (1780, 11514), (1919, 10680), (2020, 10146), (2136, 9595), (2280, 8989), (2424, 8455), (2670, 7676), (3030, 6764), (3382, 6060), (3560, 5757), (3838, 5340), (4040, 5073)]