19948630

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{887}}^1$

素因数の和:1080

約数の個数: 32

約数和(自身を含む): 38937024

約数和(自身を除く): 18988394

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 173, 346, 865, 887, 1730, 1774, 2249, 4435, 4498, 8870, 11245, 11531, 22490, 23062, 57655, 115310, 153451, 306902, 767255, 1534510, 1994863, 3989726, 9974315, 19948630]

約数ペア:

[(1, 19948630), (2, 9974315), (5, 3989726), (10, 1994863), (13, 1534510), (26, 767255), (65, 306902), (130, 153451), (173, 115310), (346, 57655), (865, 23062), (887, 22490), (1730, 11531), (1774, 11245), (2249, 8870), (4435, 4498)]