20455952

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1637}}^1$

素因数の和:1727

約数の個数: 40

約数和(自身を含む): 43872192

約数和(自身を除く): 23416240

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 71, 88, 142, 176, 284, 568, 781, 1136, 1562, 1637, 3124, 3274, 6248, 6548, 12496, 13096, 18007, 26192, 36014, 72028, 116227, 144056, 232454, 288112, 464908, 929816, 1278497, 1859632, 2556994, 5113988, 10227976, 20455952]

約数ペア:

[(1, 20455952), (2, 10227976), (4, 5113988), (8, 2556994), (11, 1859632), (16, 1278497), (22, 929816), (44, 464908), (71, 288112), (88, 232454), (142, 144056), (176, 116227), (284, 72028), (568, 36014), (781, 26192), (1136, 18007), (1562, 13096), (1637, 12496), (3124, 6548), (3274, 6248)]