20179216

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1619}}^1$

素因数の和:1687

約数の個数: 40

約数和(自身を含む): 42184800

約数和(自身を除く): 22005584

約数列:

[1, 2, 4, 8, 16, 19, 38, 41, 76, 82, 152, 164, 304, 328, 656, 779, 1558, 1619, 3116, 3238, 6232, 6476, 12464, 12952, 25904, 30761, 61522, 66379, 123044, 132758, 246088, 265516, 492176, 531032, 1062064, 1261201, 2522402, 5044804, 10089608, 20179216]

約数ペア:

[(1, 20179216), (2, 10089608), (4, 5044804), (8, 2522402), (16, 1261201), (19, 1062064), (38, 531032), (41, 492176), (76, 265516), (82, 246088), (152, 132758), (164, 123044), (304, 66379), (328, 61522), (656, 30761), (779, 25904), (1558, 12952), (1619, 12464), (3116, 6476), (3238, 6232)]