20116520

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{16223}}^1$

素因数の和:16265

約数の個数: 32

約数和(自身を含む): 46725120

約数和(自身を除く): 26608600

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 16223, 32446, 64892, 81115, 129784, 162230, 324460, 502913, 648920, 1005826, 2011652, 2514565, 4023304, 5029130, 10058260, 20116520]

約数ペア:

[(1, 20116520), (2, 10058260), (4, 5029130), (5, 4023304), (8, 2514565), (10, 2011652), (20, 1005826), (31, 648920), (40, 502913), (62, 324460), (124, 162230), (155, 129784), (248, 81115), (310, 64892), (620, 32446), (1240, 16223)]