18811210

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1$

素因数の和:199

約数の個数: 64

約数和(自身を含む): 39118464

約数和(自身を除く): 20307254

約数列:

[1, 2, 5, 10, 11, 22, 41, 43, 55, 82, 86, 97, 110, 194, 205, 215, 410, 430, 451, 473, 485, 902, 946, 970, 1067, 1763, 2134, 2255, 2365, 3526, 3977, 4171, 4510, 4730, 5335, 7954, 8342, 8815, 10670, 17630, 19393, 19885, 20855, 38786, 39770, 41710, 43747, 45881, 87494, 91762, 96965, 171011, 193930, 218735, 229405, 342022, 437470, 458810, 855055, 1710110, 1881121, 3762242, 9405605, 18811210]

約数ペア:

[(1, 18811210), (2, 9405605), (5, 3762242), (10, 1881121), (11, 1710110), (22, 855055), (41, 458810), (43, 437470), (55, 342022), (82, 229405), (86, 218735), (97, 193930), (110, 171011), (194, 96965), (205, 91762), (215, 87494), (410, 45881), (430, 43747), (451, 41710), (473, 39770), (485, 38786), (902, 20855), (946, 19885), (970, 19393), (1067, 17630), (1763, 10670), (2134, 8815), (2255, 8342), (2365, 7954), (3526, 5335), (3977, 4730), (4171, 4510)]