21566558

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{293}}^1$

素因数の和:476

約数の個数: 32

約数和(自身を含む): 37044000

約数和(自身を除く): 15477442

約数列:

[1, 2, 13, 19, 26, 38, 149, 247, 293, 298, 494, 586, 1937, 2831, 3809, 3874, 5567, 5662, 7618, 11134, 36803, 43657, 72371, 73606, 87314, 144742, 567541, 829483, 1135082, 1658966, 10783279, 21566558]

約数ペア:

[(1, 21566558), (2, 10783279), (13, 1658966), (19, 1135082), (26, 829483), (38, 567541), (149, 144742), (247, 87314), (293, 73606), (298, 72371), (494, 43657), (586, 36803), (1937, 11134), (2831, 7618), (3809, 5662), (3874, 5567)]