20903964

素因数分解:

$2^2\times 3^1\times {\mathrm{23}}^2\times {\mathrm{37}}^1\times {\mathrm{89}}^1$

素因数の和:179

約数の個数: 72

約数和(自身を含む): 52955280

約数和(自身を除く): 32051316

約数列:

[1, 2, 3, 4, 6, 12, 23, 37, 46, 69, 74, 89, 92, 111, 138, 148, 178, 222, 267, 276, 356, 444, 529, 534, 851, 1058, 1068, 1587, 1702, 2047, 2116, 2553, 3174, 3293, 3404, 4094, 5106, 6141, 6348, 6586, 8188, 9879, 10212, 12282, 13172, 19573, 19758, 24564, 39146, 39516, 47081, 58719, 75739, 78292, 94162, 117438, 141243, 151478, 188324, 227217, 234876, 282486, 302956, 454434, 564972, 908868, 1741997, 3483994, 5225991, 6967988, 10451982, 20903964]

約数ペア:

[(1, 20903964), (2, 10451982), (3, 6967988), (4, 5225991), (6, 3483994), (12, 1741997), (23, 908868), (37, 564972), (46, 454434), (69, 302956), (74, 282486), (89, 234876), (92, 227217), (111, 188324), (138, 151478), (148, 141243), (178, 117438), (222, 94162), (267, 78292), (276, 75739), (356, 58719), (444, 47081), (529, 39516), (534, 39146), (851, 24564), (1058, 19758), (1068, 19573), (1587, 13172), (1702, 12282), (2047, 10212), (2116, 9879), (2553, 8188), (3174, 6586), (3293, 6348), (3404, 6141), (4094, 5106)]