20957475

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{191}}^1$

素因数の和:241

約数の個数: 96

約数和(自身を含む): 45711360

約数和(自身を除く): 24753885

約数列:

[1, 3, 5, 7, 11, 15, 19, 21, 25, 33, 35, 55, 57, 75, 77, 95, 105, 133, 165, 175, 191, 209, 231, 275, 285, 385, 399, 475, 525, 573, 627, 665, 825, 955, 1045, 1155, 1337, 1425, 1463, 1925, 1995, 2101, 2865, 3135, 3325, 3629, 4011, 4389, 4775, 5225, 5775, 6303, 6685, 7315, 9975, 10505, 10887, 14325, 14707, 15675, 18145, 20055, 21945, 25403, 31515, 33425, 36575, 39919, 44121, 52525, 54435, 73535, 76209, 90725, 100275, 109725, 119757, 127015, 157575, 199595, 220605, 272175, 279433, 367675, 381045, 598785, 635075, 838299, 997975, 1103025, 1397165, 1905225, 2993925, 4191495, 6985825, 20957475]

約数ペア:

[(1, 20957475), (3, 6985825), (5, 4191495), (7, 2993925), (11, 1905225), (15, 1397165), (19, 1103025), (21, 997975), (25, 838299), (33, 635075), (35, 598785), (55, 381045), (57, 367675), (75, 279433), (77, 272175), (95, 220605), (105, 199595), (133, 157575), (165, 127015), (175, 119757), (191, 109725), (209, 100275), (231, 90725), (275, 76209), (285, 73535), (385, 54435), (399, 52525), (475, 44121), (525, 39919), (573, 36575), (627, 33425), (665, 31515), (825, 25403), (955, 21945), (1045, 20055), (1155, 18145), (1337, 15675), (1425, 14707), (1463, 14325), (1925, 10887), (1995, 10505), (2101, 9975), (2865, 7315), (3135, 6685), (3325, 6303), (3629, 5775), (4011, 5225), (4389, 4775)]