20686960

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1$

素因数の和:131

約数の個数: 160

約数和(自身を含む): 60746112

約数和(自身を除く): 40059152

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 34, 35, 40, 41, 53, 56, 68, 70, 80, 82, 85, 106, 112, 119, 136, 140, 164, 170, 205, 212, 238, 265, 272, 280, 287, 328, 340, 371, 410, 424, 476, 530, 560, 574, 595, 656, 680, 697, 742, 820, 848, 901, 952, 1060, 1148, 1190, 1360, 1394, 1435, 1484, 1640, 1802, 1855, 1904, 2120, 2173, 2296, 2380, 2788, 2870, 2968, 3280, 3485, 3604, 3710, 4240, 4346, 4505, 4592, 4760, 4879, 5576, 5740, 5936, 6307, 6970, 7208, 7420, 8692, 9010, 9520, 9758, 10865, 11152, 11480, 12614, 13940, 14416, 14840, 15211, 17384, 18020, 19516, 21730, 22960, 24395, 25228, 27880, 29680, 30422, 31535, 34768, 36040, 36941, 39032, 43460, 48790, 50456, 55760, 60844, 63070, 72080, 73882, 76055, 78064, 86920, 97580, 100912, 121688, 126140, 147764, 152110, 173840, 184705, 195160, 243376, 252280, 258587, 295528, 304220, 369410, 390320, 504560, 517174, 591056, 608440, 738820, 1034348, 1216880, 1292935, 1477640, 2068696, 2585870, 2955280, 4137392, 5171740, 10343480, 20686960]

約数ペア:

[(1, 20686960), (2, 10343480), (4, 5171740), (5, 4137392), (7, 2955280), (8, 2585870), (10, 2068696), (14, 1477640), (16, 1292935), (17, 1216880), (20, 1034348), (28, 738820), (34, 608440), (35, 591056), (40, 517174), (41, 504560), (53, 390320), (56, 369410), (68, 304220), (70, 295528), (80, 258587), (82, 252280), (85, 243376), (106, 195160), (112, 184705), (119, 173840), (136, 152110), (140, 147764), (164, 126140), (170, 121688), (205, 100912), (212, 97580), (238, 86920), (265, 78064), (272, 76055), (280, 73882), (287, 72080), (328, 63070), (340, 60844), (371, 55760), (410, 50456), (424, 48790), (476, 43460), (530, 39032), (560, 36941), (574, 36040), (595, 34768), (656, 31535), (680, 30422), (697, 29680), (742, 27880), (820, 25228), (848, 24395), (901, 22960), (952, 21730), (1060, 19516), (1148, 18020), (1190, 17384), (1360, 15211), (1394, 14840), (1435, 14416), (1484, 13940), (1640, 12614), (1802, 11480), (1855, 11152), (1904, 10865), (2120, 9758), (2173, 9520), (2296, 9010), (2380, 8692), (2788, 7420), (2870, 7208), (2968, 6970), (3280, 6307), (3485, 5936), (3604, 5740), (3710, 5576), (4240, 4879), (4346, 4760), (4505, 4592)]