20950540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{4241}}^1$

素因数の和:4282

約数の個数: 48

約数和(自身を含む): 49885920

約数和(自身を除く): 28935380

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4241, 4940, 8482, 16964, 21205, 42410, 55133, 80579, 84820, 110266, 161158, 220532, 275665, 322316, 402895, 551330, 805790, 1047527, 1102660, 1611580, 2095054, 4190108, 5237635, 10475270, 20950540]

約数ペア:

[(1, 20950540), (2, 10475270), (4, 5237635), (5, 4190108), (10, 2095054), (13, 1611580), (19, 1102660), (20, 1047527), (26, 805790), (38, 551330), (52, 402895), (65, 322316), (76, 275665), (95, 220532), (130, 161158), (190, 110266), (247, 84820), (260, 80579), (380, 55133), (494, 42410), (988, 21205), (1235, 16964), (2470, 8482), (4241, 4940)]