18867996885

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1\times {\mathrm{1453}}^1$

素因数の和:1758

約数の個数: 64

約数和(自身を含む): 31205399040

約数和(自身を除く): 12337402155

約数列:

[1, 3, 5, 15, 71, 89, 137, 213, 267, 355, 411, 445, 685, 1065, 1335, 1453, 2055, 4359, 6319, 7265, 9727, 12193, 18957, 21795, 29181, 31595, 36579, 48635, 60965, 94785, 103163, 129317, 145905, 182895, 199061, 309489, 387951, 515815, 597183, 646585, 865703, 995305, 1547445, 1939755, 2597109, 2985915, 4328515, 9181507, 12985545, 14133331, 17716429, 27544521, 42399993, 45907535, 53149287, 70666655, 88582145, 137722605, 211999965, 265746435, 1257866459, 3773599377, 6289332295, 18867996885]

約数ペア:

[(1, 18867996885), (3, 6289332295), (5, 3773599377), (15, 1257866459), (71, 265746435), (89, 211999965), (137, 137722605), (213, 88582145), (267, 70666655), (355, 53149287), (411, 45907535), (445, 42399993), (685, 27544521), (1065, 17716429), (1335, 14133331), (1453, 12985545), (2055, 9181507), (4359, 4328515), (6319, 2985915), (7265, 2597109), (9727, 1939755), (12193, 1547445), (18957, 995305), (21795, 865703), (29181, 646585), (31595, 597183), (36579, 515815), (48635, 387951), (60965, 309489), (94785, 199061), (103163, 182895), (129317, 145905)]