20209365

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{439}}^1$

素因数の和:495

約数の個数: 64

約数和(自身を含む): 40550400

約数和(自身を除く): 20341035

約数列:

[1, 3, 5, 9, 11, 15, 27, 31, 33, 45, 55, 93, 99, 135, 155, 165, 279, 297, 341, 439, 465, 495, 837, 1023, 1317, 1395, 1485, 1705, 2195, 3069, 3951, 4185, 4829, 5115, 6585, 9207, 11853, 13609, 14487, 15345, 19755, 24145, 40827, 43461, 46035, 59265, 68045, 72435, 122481, 130383, 149699, 204135, 217305, 367443, 449097, 612405, 651915, 748495, 1347291, 1837215, 2245485, 4041873, 6736455, 20209365]

約数ペア:

[(1, 20209365), (3, 6736455), (5, 4041873), (9, 2245485), (11, 1837215), (15, 1347291), (27, 748495), (31, 651915), (33, 612405), (45, 449097), (55, 367443), (93, 217305), (99, 204135), (135, 149699), (155, 130383), (165, 122481), (279, 72435), (297, 68045), (341, 59265), (439, 46035), (465, 43461), (495, 40827), (837, 24145), (1023, 19755), (1317, 15345), (1395, 14487), (1485, 13609), (1705, 11853), (2195, 9207), (3069, 6585), (3951, 5115), (4185, 4829)]