1021720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1$

素因数の和:148

約数の個数: 64

約数和(自身を含む): 2721600

約数和(自身を除く): 1699880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 41, 56, 70, 82, 89, 140, 164, 178, 205, 280, 287, 328, 356, 410, 445, 574, 623, 712, 820, 890, 1148, 1246, 1435, 1640, 1780, 2296, 2492, 2870, 3115, 3560, 3649, 4984, 5740, 6230, 7298, 11480, 12460, 14596, 18245, 24920, 25543, 29192, 36490, 51086, 72980, 102172, 127715, 145960, 204344, 255430, 510860, 1021720]

約数ペア:

[(1, 1021720), (2, 510860), (4, 255430), (5, 204344), (7, 145960), (8, 127715), (10, 102172), (14, 72980), (20, 51086), (28, 36490), (35, 29192), (40, 25543), (41, 24920), (56, 18245), (70, 14596), (82, 12460), (89, 11480), (140, 7298), (164, 6230), (178, 5740), (205, 4984), (280, 3649), (287, 3560), (328, 3115), (356, 2870), (410, 2492), (445, 2296), (574, 1780), (623, 1640), (712, 1435), (820, 1246), (890, 1148)]