55665220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{383}}^1$

素因数の和:461

約数の個数: 72

約数和(自身を含む): 129862656

約数和(自身を除く): 74197436

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 130, 169, 172, 215, 260, 338, 383, 430, 559, 676, 766, 845, 860, 1118, 1532, 1690, 1915, 2236, 2795, 3380, 3830, 4979, 5590, 7267, 7660, 9958, 11180, 14534, 16469, 19916, 24895, 29068, 32938, 36335, 49790, 64727, 65876, 72670, 82345, 99580, 129454, 145340, 164690, 214097, 258908, 323635, 329380, 428194, 647270, 856388, 1070485, 1294540, 2140970, 2783261, 4281940, 5566522, 11133044, 13916305, 27832610, 55665220]

約数ペア:

[(1, 55665220), (2, 27832610), (4, 13916305), (5, 11133044), (10, 5566522), (13, 4281940), (20, 2783261), (26, 2140970), (43, 1294540), (52, 1070485), (65, 856388), (86, 647270), (130, 428194), (169, 329380), (172, 323635), (215, 258908), (260, 214097), (338, 164690), (383, 145340), (430, 129454), (559, 99580), (676, 82345), (766, 72670), (845, 65876), (860, 64727), (1118, 49790), (1532, 36335), (1690, 32938), (1915, 29068), (2236, 24895), (2795, 19916), (3380, 16469), (3830, 14534), (4979, 11180), (5590, 9958), (7267, 7660)]