20631856

素因数分解:

$2^4\times 7^1\times {\mathrm{41}}^1\times {\mathrm{4493}}^1$

素因数の和:4549

約数の個数: 40

約数和(自身を含む): 46809504

約数和(自身を除く): 26177648

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 41, 56, 82, 112, 164, 287, 328, 574, 656, 1148, 2296, 4493, 4592, 8986, 17972, 31451, 35944, 62902, 71888, 125804, 184213, 251608, 368426, 503216, 736852, 1289491, 1473704, 2578982, 2947408, 5157964, 10315928, 20631856]

約数ペア:

[(1, 20631856), (2, 10315928), (4, 5157964), (7, 2947408), (8, 2578982), (14, 1473704), (16, 1289491), (28, 736852), (41, 503216), (56, 368426), (82, 251608), (112, 184213), (164, 125804), (287, 71888), (328, 62902), (574, 35944), (656, 31451), (1148, 17972), (2296, 8986), (4493, 4592)]