20935408

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{401}}^1$

素因数の和:673

約数の個数: 40

約数和(自身を含む): 43965936

約数和(自身を除く): 23030528

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 251, 401, 502, 802, 1004, 1604, 2008, 3208, 3263, 4016, 5213, 6416, 6526, 10426, 13052, 20852, 26104, 41704, 52208, 83408, 100651, 201302, 402604, 805208, 1308463, 1610416, 2616926, 5233852, 10467704, 20935408]

約数ペア:

[(1, 20935408), (2, 10467704), (4, 5233852), (8, 2616926), (13, 1610416), (16, 1308463), (26, 805208), (52, 402604), (104, 201302), (208, 100651), (251, 83408), (401, 52208), (502, 41704), (802, 26104), (1004, 20852), (1604, 13052), (2008, 10426), (3208, 6526), (3263, 6416), (4016, 5213)]