20153840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1$

素因数の和:139

約数の個数: 160

約数和(自身を含む): 59460480

約数和(自身を除く): 39306640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 29, 34, 35, 40, 56, 58, 68, 70, 73, 80, 85, 112, 116, 119, 136, 140, 145, 146, 170, 203, 232, 238, 272, 280, 290, 292, 340, 365, 406, 464, 476, 493, 511, 560, 580, 584, 595, 680, 730, 812, 952, 986, 1015, 1022, 1160, 1168, 1190, 1241, 1360, 1460, 1624, 1904, 1972, 2030, 2044, 2117, 2320, 2380, 2465, 2482, 2555, 2920, 3248, 3451, 3944, 4060, 4088, 4234, 4760, 4930, 4964, 5110, 5840, 6205, 6902, 7888, 8120, 8176, 8468, 8687, 9520, 9860, 9928, 10220, 10585, 12410, 13804, 14819, 16240, 16936, 17255, 17374, 19720, 19856, 20440, 21170, 24820, 27608, 29638, 33872, 34510, 34748, 35989, 39440, 40880, 42340, 43435, 49640, 55216, 59276, 69020, 69496, 71978, 74095, 84680, 86870, 99280, 118552, 138040, 138992, 143956, 148190, 169360, 173740, 179945, 237104, 251923, 276080, 287912, 296380, 347480, 359890, 503846, 575824, 592760, 694960, 719780, 1007692, 1185520, 1259615, 1439560, 2015384, 2519230, 2879120, 4030768, 5038460, 10076920, 20153840]

約数ペア:

[(1, 20153840), (2, 10076920), (4, 5038460), (5, 4030768), (7, 2879120), (8, 2519230), (10, 2015384), (14, 1439560), (16, 1259615), (17, 1185520), (20, 1007692), (28, 719780), (29, 694960), (34, 592760), (35, 575824), (40, 503846), (56, 359890), (58, 347480), (68, 296380), (70, 287912), (73, 276080), (80, 251923), (85, 237104), (112, 179945), (116, 173740), (119, 169360), (136, 148190), (140, 143956), (145, 138992), (146, 138040), (170, 118552), (203, 99280), (232, 86870), (238, 84680), (272, 74095), (280, 71978), (290, 69496), (292, 69020), (340, 59276), (365, 55216), (406, 49640), (464, 43435), (476, 42340), (493, 40880), (511, 39440), (560, 35989), (580, 34748), (584, 34510), (595, 33872), (680, 29638), (730, 27608), (812, 24820), (952, 21170), (986, 20440), (1015, 19856), (1022, 19720), (1160, 17374), (1168, 17255), (1190, 16936), (1241, 16240), (1360, 14819), (1460, 13804), (1624, 12410), (1904, 10585), (1972, 10220), (2030, 9928), (2044, 9860), (2117, 9520), (2320, 8687), (2380, 8468), (2465, 8176), (2482, 8120), (2555, 7888), (2920, 6902), (3248, 6205), (3451, 5840), (3944, 5110), (4060, 4964), (4088, 4930), (4234, 4760)]