20165872

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{373}}^1$

素因数の和:521

約数の個数: 40

約数和(自身を含む): 40810880

約数和(自身を除く): 20645008

約数列:

[1, 2, 4, 8, 16, 31, 62, 109, 124, 218, 248, 373, 436, 496, 746, 872, 1492, 1744, 2984, 3379, 5968, 6758, 11563, 13516, 23126, 27032, 40657, 46252, 54064, 81314, 92504, 162628, 185008, 325256, 650512, 1260367, 2520734, 5041468, 10082936, 20165872]

約数ペア:

[(1, 20165872), (2, 10082936), (4, 5041468), (8, 2520734), (16, 1260367), (31, 650512), (62, 325256), (109, 185008), (124, 162628), (218, 92504), (248, 81314), (373, 54064), (436, 46252), (496, 40657), (746, 27032), (872, 23126), (1492, 13516), (1744, 11563), (2984, 6758), (3379, 5968)]