21417008

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{1109}}^1$

素因数の和:1205

約数の個数: 40

約数和(自身を含む): 44595360

約数和(自身を除く): 23178352

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 71, 136, 142, 272, 284, 568, 1109, 1136, 1207, 2218, 2414, 4436, 4828, 8872, 9656, 17744, 18853, 19312, 37706, 75412, 78739, 150824, 157478, 301648, 314956, 629912, 1259824, 1338563, 2677126, 5354252, 10708504, 21417008]

約数ペア:

[(1, 21417008), (2, 10708504), (4, 5354252), (8, 2677126), (16, 1338563), (17, 1259824), (34, 629912), (68, 314956), (71, 301648), (136, 157478), (142, 150824), (272, 78739), (284, 75412), (568, 37706), (1109, 19312), (1136, 18853), (1207, 17744), (2218, 9656), (2414, 8872), (4436, 4828)]