20120907740

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{690491}}^1$

素因数の和:690578

約数の個数: 48

約数和(自身を含む): 44545019904

約数和(自身を除く): 24424112164

約数列:

[1, 2, 4, 5, 10, 20, 31, 47, 62, 94, 124, 155, 188, 235, 310, 470, 620, 940, 1457, 2914, 5828, 7285, 14570, 29140, 690491, 1380982, 2761964, 3452455, 6904910, 13809820, 21405221, 32453077, 42810442, 64906154, 85620884, 107026105, 129812308, 162265385, 214052210, 324530770, 428104420, 649061540, 1006045387, 2012090774, 4024181548, 5030226935, 10060453870, 20120907740]

約数ペア:

[(1, 20120907740), (2, 10060453870), (4, 5030226935), (5, 4024181548), (10, 2012090774), (20, 1006045387), (31, 649061540), (47, 428104420), (62, 324530770), (94, 214052210), (124, 162265385), (155, 129812308), (188, 107026105), (235, 85620884), (310, 64906154), (470, 42810442), (620, 32453077), (940, 21405221), (1457, 13809820), (2914, 6904910), (5828, 3452455), (7285, 2761964), (14570, 1380982), (29140, 690491)]