19796216

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{227}}^1\times {\mathrm{991}}^1$

素因数の和:1235

約数の個数: 32

約数和(自身を含む): 40711680

約数和(自身を除く): 20915464

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 227, 454, 908, 991, 1816, 1982, 2497, 3964, 4994, 7928, 9988, 10901, 19976, 21802, 43604, 87208, 224957, 449914, 899828, 1799656, 2474527, 4949054, 9898108, 19796216]

約数ペア:

[(1, 19796216), (2, 9898108), (4, 4949054), (8, 2474527), (11, 1799656), (22, 899828), (44, 449914), (88, 224957), (227, 87208), (454, 43604), (908, 21802), (991, 19976), (1816, 10901), (1982, 9988), (2497, 7928), (3964, 4994)]