21294988

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{631}}^1$

素因数の和:718

約数の個数: 48

約数和(自身を含む): 44593920

約数和(自身を除く): 23298932

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 59, 118, 143, 236, 286, 572, 631, 649, 767, 1262, 1298, 1534, 2524, 2596, 3068, 6941, 8203, 8437, 13882, 16406, 16874, 27764, 32812, 33748, 37229, 74458, 90233, 148916, 180466, 360932, 409519, 483977, 819038, 967954, 1638076, 1935908, 5323747, 10647494, 21294988]

約数ペア:

[(1, 21294988), (2, 10647494), (4, 5323747), (11, 1935908), (13, 1638076), (22, 967954), (26, 819038), (44, 483977), (52, 409519), (59, 360932), (118, 180466), (143, 148916), (236, 90233), (286, 74458), (572, 37229), (631, 33748), (649, 32812), (767, 27764), (1262, 16874), (1298, 16406), (1534, 13882), (2524, 8437), (2596, 8203), (3068, 6941)]