19944519

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{347}}^1$

素因数の和:404

約数の個数: 48

約数和(自身を含む): 34276608

約数和(自身を除く): 14332089

約数列:

[1, 3, 7, 17, 21, 23, 49, 51, 69, 119, 147, 161, 347, 357, 391, 483, 833, 1041, 1127, 1173, 2429, 2499, 2737, 3381, 5899, 7287, 7981, 8211, 17003, 17697, 19159, 23943, 41293, 51009, 55867, 57477, 123879, 135677, 167601, 289051, 391069, 407031, 867153, 949739, 1173207, 2849217, 6648173, 19944519]

約数ペア:

[(1, 19944519), (3, 6648173), (7, 2849217), (17, 1173207), (21, 949739), (23, 867153), (49, 407031), (51, 391069), (69, 289051), (119, 167601), (147, 135677), (161, 123879), (347, 57477), (357, 55867), (391, 51009), (483, 41293), (833, 23943), (1041, 19159), (1127, 17697), (1173, 17003), (2429, 8211), (2499, 7981), (2737, 7287), (3381, 5899)]