19504520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{1699}}^1$

素因数の和:1758

約数の個数: 64

約数和(自身を含む): 51408000

約数和(自身を除く): 31903480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 41, 56, 70, 82, 140, 164, 205, 280, 287, 328, 410, 574, 820, 1148, 1435, 1640, 1699, 2296, 2870, 3398, 5740, 6796, 8495, 11480, 11893, 13592, 16990, 23786, 33980, 47572, 59465, 67960, 69659, 95144, 118930, 139318, 237860, 278636, 348295, 475720, 487613, 557272, 696590, 975226, 1393180, 1950452, 2438065, 2786360, 3900904, 4876130, 9752260, 19504520]

約数ペア:

[(1, 19504520), (2, 9752260), (4, 4876130), (5, 3900904), (7, 2786360), (8, 2438065), (10, 1950452), (14, 1393180), (20, 975226), (28, 696590), (35, 557272), (40, 487613), (41, 475720), (56, 348295), (70, 278636), (82, 237860), (140, 139318), (164, 118930), (205, 95144), (280, 69659), (287, 67960), (328, 59465), (410, 47572), (574, 33980), (820, 23786), (1148, 16990), (1435, 13592), (1640, 11893), (1699, 11480), (2296, 8495), (2870, 6796), (3398, 5740)]