20418528

素因数分解:

$2^5\times 3^1\times {\mathrm{13}}^1\times {\mathrm{16361}}^1$

素因数の和:16387

約数の個数: 48

約数和(自身を含む): 57725136

約数和(自身を除く): 37306608

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 32, 39, 48, 52, 78, 96, 104, 156, 208, 312, 416, 624, 1248, 16361, 32722, 49083, 65444, 98166, 130888, 196332, 212693, 261776, 392664, 425386, 523552, 638079, 785328, 850772, 1276158, 1570656, 1701544, 2552316, 3403088, 5104632, 6806176, 10209264, 20418528]

約数ペア:

[(1, 20418528), (2, 10209264), (3, 6806176), (4, 5104632), (6, 3403088), (8, 2552316), (12, 1701544), (13, 1570656), (16, 1276158), (24, 850772), (26, 785328), (32, 638079), (39, 523552), (48, 425386), (52, 392664), (78, 261776), (96, 212693), (104, 196332), (156, 130888), (208, 98166), (312, 65444), (416, 49083), (624, 32722), (1248, 16361)]