215445890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{491}}^1\times {\mathrm{3989}}^1$

素因数の和:4498

約数の個数: 32

約数和(自身を含む): 424025280

約数和(自身を除く): 208579390

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 491, 982, 2455, 3989, 4910, 5401, 7978, 10802, 19945, 27005, 39890, 43879, 54010, 87758, 219395, 438790, 1958599, 3917198, 9792995, 19585990, 21544589, 43089178, 107722945, 215445890]

約数ペア:

[(1, 215445890), (2, 107722945), (5, 43089178), (10, 21544589), (11, 19585990), (22, 9792995), (55, 3917198), (110, 1958599), (491, 438790), (982, 219395), (2455, 87758), (3989, 54010), (4910, 43879), (5401, 39890), (7978, 27005), (10802, 19945)]