18458180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{127}}^1$

素因数の和:205

約数の個数: 72

約数和(自身を含む): 43287552

約数和(自身を除く): 24829372

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 127, 130, 169, 172, 215, 254, 260, 338, 430, 508, 559, 635, 676, 845, 860, 1118, 1270, 1651, 1690, 2236, 2540, 2795, 3302, 3380, 5461, 5590, 6604, 7267, 8255, 10922, 11180, 14534, 16510, 21463, 21844, 27305, 29068, 33020, 36335, 42926, 54610, 70993, 72670, 85852, 107315, 109220, 141986, 145340, 214630, 283972, 354965, 429260, 709930, 922909, 1419860, 1845818, 3691636, 4614545, 9229090, 18458180]

約数ペア:

[(1, 18458180), (2, 9229090), (4, 4614545), (5, 3691636), (10, 1845818), (13, 1419860), (20, 922909), (26, 709930), (43, 429260), (52, 354965), (65, 283972), (86, 214630), (127, 145340), (130, 141986), (169, 109220), (172, 107315), (215, 85852), (254, 72670), (260, 70993), (338, 54610), (430, 42926), (508, 36335), (559, 33020), (635, 29068), (676, 27305), (845, 21844), (860, 21463), (1118, 16510), (1270, 14534), (1651, 11180), (1690, 10922), (2236, 8255), (2540, 7267), (2795, 6604), (3302, 5590), (3380, 5461)]