20393685

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{491}}^1$

素因数の和:586

約数の個数: 48

約数和(自身を含む): 38683008

約数和(自身を除く): 18289323

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 71, 117, 195, 213, 355, 491, 585, 639, 923, 1065, 1473, 2455, 2769, 3195, 4419, 4615, 6383, 7365, 8307, 13845, 19149, 22095, 31915, 34861, 41535, 57447, 95745, 104583, 174305, 287235, 313749, 453193, 522915, 1359579, 1568745, 2265965, 4078737, 6797895, 20393685]

約数ペア:

[(1, 20393685), (3, 6797895), (5, 4078737), (9, 2265965), (13, 1568745), (15, 1359579), (39, 522915), (45, 453193), (65, 313749), (71, 287235), (117, 174305), (195, 104583), (213, 95745), (355, 57447), (491, 41535), (585, 34861), (639, 31915), (923, 22095), (1065, 19149), (1473, 13845), (2455, 8307), (2769, 7365), (3195, 6383), (4419, 4615)]