18828520

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{27689}}^1$

素因数の和:27717

約数の個数: 32

約数和(自身を含む): 44857800

約数和(自身を除く): 26029280

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 27689, 55378, 110756, 138445, 221512, 276890, 470713, 553780, 941426, 1107560, 1882852, 2353565, 3765704, 4707130, 9414260, 18828520]

約数ペア:

[(1, 18828520), (2, 9414260), (4, 4707130), (5, 3765704), (8, 2353565), (10, 1882852), (17, 1107560), (20, 941426), (34, 553780), (40, 470713), (68, 276890), (85, 221512), (136, 138445), (170, 110756), (340, 55378), (680, 27689)]