20120780

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{113}}^1\times {\mathrm{307}}^1$

素因数の和:458

約数の個数: 48

約数和(自身を含む): 44241120

約数和(自身を除く): 24120340

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 113, 116, 145, 226, 290, 307, 452, 565, 580, 614, 1130, 1228, 1535, 2260, 3070, 3277, 6140, 6554, 8903, 13108, 16385, 17806, 32770, 34691, 35612, 44515, 65540, 69382, 89030, 138764, 173455, 178060, 346910, 693820, 1006039, 2012078, 4024156, 5030195, 10060390, 20120780]

約数ペア:

[(1, 20120780), (2, 10060390), (4, 5030195), (5, 4024156), (10, 2012078), (20, 1006039), (29, 693820), (58, 346910), (113, 178060), (116, 173455), (145, 138764), (226, 89030), (290, 69382), (307, 65540), (452, 44515), (565, 35612), (580, 34691), (614, 32770), (1130, 17806), (1228, 16385), (1535, 13108), (2260, 8903), (3070, 6554), (3277, 6140)]