20728656

素因数分解:

$2^4\times 3^3\times {\mathrm{13}}^1\times {\mathrm{3691}}^1$

素因数の和:3721

約数の個数: 80

約数和(自身を含む): 64093120

約数和(自身を除く): 43364464

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 27, 36, 39, 48, 52, 54, 72, 78, 104, 108, 117, 144, 156, 208, 216, 234, 312, 351, 432, 468, 624, 702, 936, 1404, 1872, 2808, 3691, 5616, 7382, 11073, 14764, 22146, 29528, 33219, 44292, 47983, 59056, 66438, 88584, 95966, 99657, 132876, 143949, 177168, 191932, 199314, 265752, 287898, 383864, 398628, 431847, 531504, 575796, 767728, 797256, 863694, 1151592, 1295541, 1594512, 1727388, 2303184, 2591082, 3454776, 5182164, 6909552, 10364328, 20728656]

約数ペア:

[(1, 20728656), (2, 10364328), (3, 6909552), (4, 5182164), (6, 3454776), (8, 2591082), (9, 2303184), (12, 1727388), (13, 1594512), (16, 1295541), (18, 1151592), (24, 863694), (26, 797256), (27, 767728), (36, 575796), (39, 531504), (48, 431847), (52, 398628), (54, 383864), (72, 287898), (78, 265752), (104, 199314), (108, 191932), (117, 177168), (144, 143949), (156, 132876), (208, 99657), (216, 95966), (234, 88584), (312, 66438), (351, 59056), (432, 47983), (468, 44292), (624, 33219), (702, 29528), (936, 22146), (1404, 14764), (1872, 11073), (2808, 7382), (3691, 5616)]