18786963

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1$

素因数の和:279

約数の個数: 32

約数和(自身を含む): 28123200

約数和(自身を除く): 9336237

約数列:

[1, 3, 13, 39, 53, 61, 149, 159, 183, 447, 689, 793, 1937, 2067, 2379, 3233, 5811, 7897, 9089, 9699, 23691, 27267, 42029, 102661, 118157, 126087, 307983, 354471, 481717, 1445151, 6262321, 18786963]

約数ペア:

[(1, 18786963), (3, 6262321), (13, 1445151), (39, 481717), (53, 354471), (61, 307983), (149, 126087), (159, 118157), (183, 102661), (447, 42029), (689, 27267), (793, 23691), (1937, 9699), (2067, 9089), (2379, 7897), (3233, 5811)]