18880880

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{13883}}^1$

素因数の和:13913

約数の個数: 40

約数和(自身を含む): 46483632

約数和(自身を除く): 27602752

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 13883, 27766, 55532, 69415, 111064, 138830, 222128, 236011, 277660, 472022, 555320, 944044, 1110640, 1180055, 1888088, 2360110, 3776176, 4720220, 9440440, 18880880]

約数ペア:

[(1, 18880880), (2, 9440440), (4, 4720220), (5, 3776176), (8, 2360110), (10, 1888088), (16, 1180055), (17, 1110640), (20, 944044), (34, 555320), (40, 472022), (68, 277660), (80, 236011), (85, 222128), (136, 138830), (170, 111064), (272, 69415), (340, 55532), (680, 27766), (1360, 13883)]