19910860

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{347}}^1$

素因数の和:526

約数の個数: 48

約数和(自身を含む): 44432640

約数和(自身を除く): 24521780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 151, 190, 302, 347, 380, 604, 694, 755, 1388, 1510, 1735, 2869, 3020, 3470, 5738, 6593, 6940, 11476, 13186, 14345, 26372, 28690, 32965, 52397, 57380, 65930, 104794, 131860, 209588, 261985, 523970, 995543, 1047940, 1991086, 3982172, 4977715, 9955430, 19910860]

約数ペア:

[(1, 19910860), (2, 9955430), (4, 4977715), (5, 3982172), (10, 1991086), (19, 1047940), (20, 995543), (38, 523970), (76, 261985), (95, 209588), (151, 131860), (190, 104794), (302, 65930), (347, 57380), (380, 52397), (604, 32965), (694, 28690), (755, 26372), (1388, 14345), (1510, 13186), (1735, 11476), (2869, 6940), (3020, 6593), (3470, 5738)]