18935416

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:184

約数の個数: 64

約数和(自身を含む): 39890880

約数和(自身を除く): 20955464

約数列:

[1, 2, 4, 8, 17, 34, 37, 53, 68, 71, 74, 106, 136, 142, 148, 212, 284, 296, 424, 568, 629, 901, 1207, 1258, 1802, 1961, 2414, 2516, 2627, 3604, 3763, 3922, 4828, 5032, 5254, 7208, 7526, 7844, 9656, 10508, 15052, 15688, 21016, 30104, 33337, 44659, 63971, 66674, 89318, 127942, 133348, 139231, 178636, 255884, 266696, 278462, 357272, 511768, 556924, 1113848, 2366927, 4733854, 9467708, 18935416]

約数ペア:

[(1, 18935416), (2, 9467708), (4, 4733854), (8, 2366927), (17, 1113848), (34, 556924), (37, 511768), (53, 357272), (68, 278462), (71, 266696), (74, 255884), (106, 178636), (136, 139231), (142, 133348), (148, 127942), (212, 89318), (284, 66674), (296, 63971), (424, 44659), (568, 33337), (629, 30104), (901, 21016), (1207, 15688), (1258, 15052), (1802, 10508), (1961, 9656), (2414, 7844), (2516, 7526), (2627, 7208), (3604, 5254), (3763, 5032), (3922, 4828)]