61818520

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{283}}^1$

素因数の和:464

約数の個数: 64

約数和(自身を含む): 143953920

約数和(自身を除く): 82135400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 127, 172, 215, 254, 283, 344, 430, 508, 566, 635, 860, 1016, 1132, 1270, 1415, 1720, 2264, 2540, 2830, 5080, 5461, 5660, 10922, 11320, 12169, 21844, 24338, 27305, 35941, 43688, 48676, 54610, 60845, 71882, 97352, 109220, 121690, 143764, 179705, 218440, 243380, 287528, 359410, 486760, 718820, 1437640, 1545463, 3090926, 6181852, 7727315, 12363704, 15454630, 30909260, 61818520]

約数ペア:

[(1, 61818520), (2, 30909260), (4, 15454630), (5, 12363704), (8, 7727315), (10, 6181852), (20, 3090926), (40, 1545463), (43, 1437640), (86, 718820), (127, 486760), (172, 359410), (215, 287528), (254, 243380), (283, 218440), (344, 179705), (430, 143764), (508, 121690), (566, 109220), (635, 97352), (860, 71882), (1016, 60845), (1132, 54610), (1270, 48676), (1415, 43688), (1720, 35941), (2264, 27305), (2540, 24338), (2830, 21844), (5080, 12169), (5461, 11320), (5660, 10922)]