389905120

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{221537}}^1$

素因数の和:221563

約数の個数: 48

約数和(自身を含む): 1004896368

約数和(自身を除く): 614991248

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 221537, 443074, 886148, 1107685, 1772296, 2215370, 2436907, 3544592, 4430740, 4873814, 7089184, 8861480, 9747628, 12184535, 17722960, 19495256, 24369070, 35445920, 38990512, 48738140, 77981024, 97476280, 194952560, 389905120]

約数ペア:

[(1, 389905120), (2, 194952560), (4, 97476280), (5, 77981024), (8, 48738140), (10, 38990512), (11, 35445920), (16, 24369070), (20, 19495256), (22, 17722960), (32, 12184535), (40, 9747628), (44, 8861480), (55, 7089184), (80, 4873814), (88, 4430740), (110, 3544592), (160, 2436907), (176, 2215370), (220, 1772296), (352, 1107685), (440, 886148), (880, 443074), (1760, 221537)]