18780521751

素因数分解:

$3^2\times {\mathrm{53}}^2\times {\mathrm{571}}^1\times {\mathrm{1301}}^1$

素因数の和:1984

約数の個数: 36

約数和(自身を含む): 27718626936

約数和(自身を除く): 8938105185

約数列:

[1, 3, 9, 53, 159, 477, 571, 1301, 1713, 2809, 3903, 5139, 8427, 11709, 25281, 30263, 68953, 90789, 206859, 272367, 620577, 742871, 1603939, 2228613, 3654509, 4811817, 6685839, 10963527, 14435451, 32890581, 39372163, 118116489, 354349467, 2086724639, 6260173917, 18780521751]

約数ペア:

[(1, 18780521751), (3, 6260173917), (9, 2086724639), (53, 354349467), (159, 118116489), (477, 39372163), (571, 32890581), (1301, 14435451), (1713, 10963527), (2809, 6685839), (3903, 4811817), (5139, 3654509), (8427, 2228613), (11709, 1603939), (25281, 742871), (30263, 620577), (68953, 272367), (90789, 206859)]