20842822

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{359}}^1$

素因数の和:421

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 22702778

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 29, 58, 77, 91, 143, 154, 182, 203, 286, 319, 359, 377, 406, 638, 718, 754, 1001, 2002, 2233, 2513, 2639, 3949, 4147, 4466, 4667, 5026, 5278, 7898, 8294, 9334, 10411, 20822, 27643, 29029, 32669, 51337, 55286, 58058, 65338, 72877, 102674, 114521, 135343, 145754, 229042, 270686, 359359, 718718, 801647, 947401, 1488773, 1603294, 1894802, 2977546, 10421411, 20842822]

約数ペア:

[(1, 20842822), (2, 10421411), (7, 2977546), (11, 1894802), (13, 1603294), (14, 1488773), (22, 947401), (26, 801647), (29, 718718), (58, 359359), (77, 270686), (91, 229042), (143, 145754), (154, 135343), (182, 114521), (203, 102674), (286, 72877), (319, 65338), (359, 58058), (377, 55286), (406, 51337), (638, 32669), (718, 29029), (754, 27643), (1001, 20822), (2002, 10411), (2233, 9334), (2513, 8294), (2639, 7898), (3949, 5278), (4147, 5026), (4466, 4667)]