1998920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{59}}^1$

素因数の和:99

約数の個数: 96

約数和(自身を含む): 5745600

約数和(自身を除く): 3746680

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 59, 70, 77, 88, 110, 118, 121, 140, 154, 220, 236, 242, 280, 295, 308, 385, 413, 440, 472, 484, 590, 605, 616, 649, 770, 826, 847, 968, 1180, 1210, 1298, 1540, 1652, 1694, 2065, 2360, 2420, 2596, 3080, 3245, 3304, 3388, 4130, 4235, 4543, 4840, 5192, 6490, 6776, 7139, 8260, 8470, 9086, 12980, 14278, 16520, 16940, 18172, 22715, 25960, 28556, 33880, 35695, 36344, 45430, 49973, 57112, 71390, 90860, 99946, 142780, 181720, 199892, 249865, 285560, 399784, 499730, 999460, 1998920]

約数ペア:

[(1, 1998920), (2, 999460), (4, 499730), (5, 399784), (7, 285560), (8, 249865), (10, 199892), (11, 181720), (14, 142780), (20, 99946), (22, 90860), (28, 71390), (35, 57112), (40, 49973), (44, 45430), (55, 36344), (56, 35695), (59, 33880), (70, 28556), (77, 25960), (88, 22715), (110, 18172), (118, 16940), (121, 16520), (140, 14278), (154, 12980), (220, 9086), (236, 8470), (242, 8260), (280, 7139), (295, 6776), (308, 6490), (385, 5192), (413, 4840), (440, 4543), (472, 4235), (484, 4130), (590, 3388), (605, 3304), (616, 3245), (649, 3080), (770, 2596), (826, 2420), (847, 2360), (968, 2065), (1180, 1694), (1210, 1652), (1298, 1540)]