19567821

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{229}}^1\times {\mathrm{313}}^1$

素因数の和:565

約数の個数: 32

約数和(自身を含む): 32354560

約数和(自身を除く): 12786739

約数列:

[1, 3, 7, 13, 21, 39, 91, 229, 273, 313, 687, 939, 1603, 2191, 2977, 4069, 4809, 6573, 8931, 12207, 20839, 28483, 62517, 71677, 85449, 215031, 501739, 931801, 1505217, 2795403, 6522607, 19567821]

約数ペア:

[(1, 19567821), (3, 6522607), (7, 2795403), (13, 1505217), (21, 931801), (39, 501739), (91, 215031), (229, 85449), (273, 71677), (313, 62517), (687, 28483), (939, 20839), (1603, 12207), (2191, 8931), (2977, 6573), (4069, 4809)]