20516265

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{191}}^1$

素因数の和:251

約数の個数: 96

約数和(自身を含む): 46006272

約数和(自身を除く): 25490007

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 31, 33, 35, 45, 55, 63, 77, 93, 99, 105, 155, 165, 191, 217, 231, 279, 315, 341, 385, 465, 495, 573, 651, 693, 955, 1023, 1085, 1155, 1337, 1395, 1705, 1719, 1953, 2101, 2387, 2865, 3069, 3255, 3465, 4011, 5115, 5921, 6303, 6685, 7161, 8595, 9765, 10505, 11935, 12033, 14707, 15345, 17763, 18909, 20055, 21483, 29605, 31515, 35805, 41447, 44121, 53289, 60165, 65131, 73535, 88815, 94545, 107415, 124341, 132363, 195393, 207235, 220605, 266445, 325655, 373023, 455917, 586179, 621705, 661815, 976965, 1367751, 1865115, 2279585, 2930895, 4103253, 6838755, 20516265]

約数ペア:

[(1, 20516265), (3, 6838755), (5, 4103253), (7, 2930895), (9, 2279585), (11, 1865115), (15, 1367751), (21, 976965), (31, 661815), (33, 621705), (35, 586179), (45, 455917), (55, 373023), (63, 325655), (77, 266445), (93, 220605), (99, 207235), (105, 195393), (155, 132363), (165, 124341), (191, 107415), (217, 94545), (231, 88815), (279, 73535), (315, 65131), (341, 60165), (385, 53289), (465, 44121), (495, 41447), (573, 35805), (651, 31515), (693, 29605), (955, 21483), (1023, 20055), (1085, 18909), (1155, 17763), (1337, 15345), (1395, 14707), (1705, 12033), (1719, 11935), (1953, 10505), (2101, 9765), (2387, 8595), (2865, 7161), (3069, 6685), (3255, 6303), (3465, 5921), (4011, 5115)]