16988140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{293}}^1$

素因数の和:538

約数の個数: 48

約数和(自身を含む): 38723328

約数和(自身を除く): 21735188

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 223, 260, 293, 446, 586, 892, 1115, 1172, 1465, 2230, 2899, 2930, 3809, 4460, 5798, 5860, 7618, 11596, 14495, 15236, 19045, 28990, 38090, 57980, 65339, 76180, 130678, 261356, 326695, 653390, 849407, 1306780, 1698814, 3397628, 4247035, 8494070, 16988140]

約数ペア:

[(1, 16988140), (2, 8494070), (4, 4247035), (5, 3397628), (10, 1698814), (13, 1306780), (20, 849407), (26, 653390), (52, 326695), (65, 261356), (130, 130678), (223, 76180), (260, 65339), (293, 57980), (446, 38090), (586, 28990), (892, 19045), (1115, 15236), (1172, 14495), (1465, 11596), (2230, 7618), (2899, 5860), (2930, 5798), (3809, 4460)]