209580404

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1\times {\mathrm{491}}^1$

素因数の和:704

約数の個数: 48

約数和(自身を含む): 409147200

約数和(自身を除く): 199566796

約数列:

[1, 2, 4, 11, 22, 44, 89, 109, 178, 218, 356, 436, 491, 979, 982, 1199, 1958, 1964, 2398, 3916, 4796, 5401, 9701, 10802, 19402, 21604, 38804, 43699, 53519, 87398, 106711, 107038, 174796, 213422, 214076, 426844, 480689, 588709, 961378, 1177418, 1922756, 2354836, 4763191, 9526382, 19052764, 52395101, 104790202, 209580404]

約数ペア:

[(1, 209580404), (2, 104790202), (4, 52395101), (11, 19052764), (22, 9526382), (44, 4763191), (89, 2354836), (109, 1922756), (178, 1177418), (218, 961378), (356, 588709), (436, 480689), (491, 426844), (979, 214076), (982, 213422), (1199, 174796), (1958, 107038), (1964, 106711), (2398, 87398), (3916, 53519), (4796, 43699), (5401, 38804), (9701, 21604), (10802, 19402)]