19663450

素因数分解:

$2^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{191}}^1$

素因数の和:303

約数の個数: 48

約数和(自身を含む): 38568960

約数和(自身を除く): 18905510

約数列:

[1, 2, 5, 10, 25, 29, 50, 58, 71, 142, 145, 191, 290, 355, 382, 710, 725, 955, 1450, 1775, 1910, 2059, 3550, 4118, 4775, 5539, 9550, 10295, 11078, 13561, 20590, 27122, 27695, 51475, 55390, 67805, 102950, 135610, 138475, 276950, 339025, 393269, 678050, 786538, 1966345, 3932690, 9831725, 19663450]

約数ペア:

[(1, 19663450), (2, 9831725), (5, 3932690), (10, 1966345), (25, 786538), (29, 678050), (50, 393269), (58, 339025), (71, 276950), (142, 138475), (145, 135610), (191, 102950), (290, 67805), (355, 55390), (382, 51475), (710, 27695), (725, 27122), (955, 20590), (1450, 13561), (1775, 11078), (1910, 10295), (2059, 9550), (3550, 5539), (4118, 4775)]