21729266

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{149}}^1$

素因数の和:314

約数の個数: 32

約数和(自身を含む): 36288000

約数和(自身を除く): 14558734

約数列:

[1, 2, 13, 26, 71, 79, 142, 149, 158, 298, 923, 1027, 1846, 1937, 2054, 3874, 5609, 10579, 11218, 11771, 21158, 23542, 72917, 137527, 145834, 153023, 275054, 306046, 835741, 1671482, 10864633, 21729266]

約数ペア:

[(1, 21729266), (2, 10864633), (13, 1671482), (26, 835741), (71, 306046), (79, 275054), (142, 153023), (149, 145834), (158, 137527), (298, 72917), (923, 23542), (1027, 21158), (1846, 11771), (1937, 11218), (2054, 10579), (3874, 5609)]