1284020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1$

素因数の和:168

約数の個数: 48

約数和(自身を含む): 2956800

約数和(自身を除く): 1672780

約数列:

[1, 2, 4, 5, 10, 19, 20, 31, 38, 62, 76, 95, 109, 124, 155, 190, 218, 310, 380, 436, 545, 589, 620, 1090, 1178, 2071, 2180, 2356, 2945, 3379, 4142, 5890, 6758, 8284, 10355, 11780, 13516, 16895, 20710, 33790, 41420, 64201, 67580, 128402, 256804, 321005, 642010, 1284020]

約数ペア:

[(1, 1284020), (2, 642010), (4, 321005), (5, 256804), (10, 128402), (19, 67580), (20, 64201), (31, 41420), (38, 33790), (62, 20710), (76, 16895), (95, 13516), (109, 11780), (124, 10355), (155, 8284), (190, 6758), (218, 5890), (310, 4142), (380, 3379), (436, 2945), (545, 2356), (589, 2180), (620, 2071), (1090, 1178)]