19839940

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{107}}^1\times {\mathrm{127}}^1$

素因数の和:316

約数の個数: 48

約数和(自身を含む): 42964992

約数和(自身を除く): 23125052

約数列:

[1, 2, 4, 5, 10, 20, 73, 107, 127, 146, 214, 254, 292, 365, 428, 508, 535, 635, 730, 1070, 1270, 1460, 2140, 2540, 7811, 9271, 13589, 15622, 18542, 27178, 31244, 37084, 39055, 46355, 54356, 67945, 78110, 92710, 135890, 156220, 185420, 271780, 991997, 1983994, 3967988, 4959985, 9919970, 19839940]

約数ペア:

[(1, 19839940), (2, 9919970), (4, 4959985), (5, 3967988), (10, 1983994), (20, 991997), (73, 271780), (107, 185420), (127, 156220), (146, 135890), (214, 92710), (254, 78110), (292, 67945), (365, 54356), (428, 46355), (508, 39055), (535, 37084), (635, 31244), (730, 27178), (1070, 18542), (1270, 15622), (1460, 13589), (2140, 9271), (2540, 7811)]