19778091

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1$

素因数の和:251

約数の個数: 32

約数和(自身を含む): 28950528

約数和(自身を除く): 9172437

約数列:

[1, 3, 23, 37, 61, 69, 111, 127, 183, 381, 851, 1403, 2257, 2553, 2921, 4209, 4699, 6771, 7747, 8763, 14097, 23241, 51911, 108077, 155733, 178181, 286639, 324231, 534543, 859917, 6592697, 19778091]

約数ペア:

[(1, 19778091), (3, 6592697), (23, 859917), (37, 534543), (61, 324231), (69, 286639), (111, 178181), (127, 155733), (183, 108077), (381, 51911), (851, 23241), (1403, 14097), (2257, 8763), (2553, 7747), (2921, 6771), (4209, 4699)]