25439480

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{179}}^1$

素因数の和:237

約数の個数: 128

約数和(自身を含む): 69984000

約数和(自身を除く): 44544520

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 19, 20, 22, 34, 38, 40, 44, 55, 68, 76, 85, 88, 95, 110, 136, 152, 170, 179, 187, 190, 209, 220, 323, 340, 358, 374, 380, 418, 440, 646, 680, 716, 748, 760, 836, 895, 935, 1045, 1292, 1432, 1496, 1615, 1672, 1790, 1870, 1969, 2090, 2584, 3043, 3230, 3401, 3553, 3580, 3740, 3938, 4180, 6086, 6460, 6802, 7106, 7160, 7480, 7876, 8360, 9845, 12172, 12920, 13604, 14212, 15215, 15752, 17005, 17765, 19690, 24344, 27208, 28424, 30430, 33473, 34010, 35530, 37411, 39380, 57817, 60860, 66946, 68020, 71060, 74822, 78760, 115634, 121720, 133892, 136040, 142120, 149644, 167365, 187055, 231268, 267784, 289085, 299288, 334730, 374110, 462536, 578170, 635987, 669460, 748220, 1156340, 1271974, 1338920, 1496440, 2312680, 2543948, 3179935, 5087896, 6359870, 12719740, 25439480]

約数ペア:

[(1, 25439480), (2, 12719740), (4, 6359870), (5, 5087896), (8, 3179935), (10, 2543948), (11, 2312680), (17, 1496440), (19, 1338920), (20, 1271974), (22, 1156340), (34, 748220), (38, 669460), (40, 635987), (44, 578170), (55, 462536), (68, 374110), (76, 334730), (85, 299288), (88, 289085), (95, 267784), (110, 231268), (136, 187055), (152, 167365), (170, 149644), (179, 142120), (187, 136040), (190, 133892), (209, 121720), (220, 115634), (323, 78760), (340, 74822), (358, 71060), (374, 68020), (380, 66946), (418, 60860), (440, 57817), (646, 39380), (680, 37411), (716, 35530), (748, 34010), (760, 33473), (836, 30430), (895, 28424), (935, 27208), (1045, 24344), (1292, 19690), (1432, 17765), (1496, 17005), (1615, 15752), (1672, 15215), (1790, 14212), (1870, 13604), (1969, 12920), (2090, 12172), (2584, 9845), (3043, 8360), (3230, 7876), (3401, 7480), (3553, 7160), (3580, 7106), (3740, 6802), (3938, 6460), (4180, 6086)]