2161520

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{659}}^1$

素因数の和:713

約数の個数: 40

約数和(自身を含む): 5155920

約数和(自身を除く): 2994400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 659, 820, 1318, 1640, 2636, 3280, 3295, 5272, 6590, 10544, 13180, 26360, 27019, 52720, 54038, 108076, 135095, 216152, 270190, 432304, 540380, 1080760, 2161520]

約数ペア:

[(1, 2161520), (2, 1080760), (4, 540380), (5, 432304), (8, 270190), (10, 216152), (16, 135095), (20, 108076), (40, 54038), (41, 52720), (80, 27019), (82, 26360), (164, 13180), (205, 10544), (328, 6590), (410, 5272), (656, 3295), (659, 3280), (820, 2636), (1318, 1640)]