20836640

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{11839}}^1$

素因数の和:11865

約数の個数: 48

約数和(自身を含む): 53706240

約数和(自身を除く): 32869600

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 11839, 23678, 47356, 59195, 94712, 118390, 130229, 189424, 236780, 260458, 378848, 473560, 520916, 651145, 947120, 1041832, 1302290, 1894240, 2083664, 2604580, 4167328, 5209160, 10418320, 20836640]

約数ペア:

[(1, 20836640), (2, 10418320), (4, 5209160), (5, 4167328), (8, 2604580), (10, 2083664), (11, 1894240), (16, 1302290), (20, 1041832), (22, 947120), (32, 651145), (40, 520916), (44, 473560), (55, 378848), (80, 260458), (88, 236780), (110, 189424), (160, 130229), (176, 118390), (220, 94712), (352, 59195), (440, 47356), (880, 23678), (1760, 11839)]