19776939

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 33707520

約数和(自身を除く): 13930581

約数列:

[1, 3, 7, 13, 21, 39, 49, 79, 91, 131, 147, 237, 273, 393, 553, 637, 917, 1027, 1659, 1703, 1911, 2751, 3081, 3871, 5109, 6419, 7189, 10349, 11613, 11921, 19257, 21567, 31047, 35763, 50323, 72443, 83447, 134537, 150969, 217329, 250341, 403611, 507101, 941759, 1521303, 2825277, 6592313, 19776939]

約数ペア:

[(1, 19776939), (3, 6592313), (7, 2825277), (13, 1521303), (21, 941759), (39, 507101), (49, 403611), (79, 250341), (91, 217329), (131, 150969), (147, 134537), (237, 83447), (273, 72443), (393, 50323), (553, 35763), (637, 31047), (917, 21567), (1027, 19257), (1659, 11921), (1703, 11613), (1911, 10349), (2751, 7189), (3081, 6419), (3871, 5109)]