20203480

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1$

素因数の和:149

約数の個数: 128

約数和(自身を含む): 54665280

約数和(自身を除く): 34461800

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 37, 40, 44, 55, 68, 73, 74, 85, 88, 110, 136, 146, 148, 170, 185, 187, 220, 292, 296, 340, 365, 370, 374, 407, 440, 584, 629, 680, 730, 740, 748, 803, 814, 935, 1241, 1258, 1460, 1480, 1496, 1606, 1628, 1870, 2035, 2482, 2516, 2701, 2920, 3145, 3212, 3256, 3740, 4015, 4070, 4964, 5032, 5402, 6205, 6290, 6424, 6919, 7480, 8030, 8140, 9928, 10804, 12410, 12580, 13505, 13651, 13838, 16060, 16280, 21608, 24820, 25160, 27010, 27302, 27676, 29711, 32120, 34595, 45917, 49640, 54020, 54604, 55352, 59422, 68255, 69190, 91834, 108040, 109208, 118844, 136510, 138380, 148555, 183668, 229585, 237688, 273020, 276760, 297110, 367336, 459170, 505087, 546040, 594220, 918340, 1010174, 1188440, 1836680, 2020348, 2525435, 4040696, 5050870, 10101740, 20203480]

約数ペア:

[(1, 20203480), (2, 10101740), (4, 5050870), (5, 4040696), (8, 2525435), (10, 2020348), (11, 1836680), (17, 1188440), (20, 1010174), (22, 918340), (34, 594220), (37, 546040), (40, 505087), (44, 459170), (55, 367336), (68, 297110), (73, 276760), (74, 273020), (85, 237688), (88, 229585), (110, 183668), (136, 148555), (146, 138380), (148, 136510), (170, 118844), (185, 109208), (187, 108040), (220, 91834), (292, 69190), (296, 68255), (340, 59422), (365, 55352), (370, 54604), (374, 54020), (407, 49640), (440, 45917), (584, 34595), (629, 32120), (680, 29711), (730, 27676), (740, 27302), (748, 27010), (803, 25160), (814, 24820), (935, 21608), (1241, 16280), (1258, 16060), (1460, 13838), (1480, 13651), (1496, 13505), (1606, 12580), (1628, 12410), (1870, 10804), (2035, 9928), (2482, 8140), (2516, 8030), (2701, 7480), (2920, 6919), (3145, 6424), (3212, 6290), (3256, 6205), (3740, 5402), (4015, 5032), (4070, 4964)]