28873880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{1021}}^1$

素因数の和:1140

約数の個数: 64

約数和(自身を含む): 75055680

約数和(自身を除く): 46181800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 101, 140, 202, 280, 404, 505, 707, 808, 1010, 1021, 1414, 2020, 2042, 2828, 3535, 4040, 4084, 5105, 5656, 7070, 7147, 8168, 10210, 14140, 14294, 20420, 28280, 28588, 35735, 40840, 57176, 71470, 103121, 142940, 206242, 285880, 412484, 515605, 721847, 824968, 1031210, 1443694, 2062420, 2887388, 3609235, 4124840, 5774776, 7218470, 14436940, 28873880]

約数ペア:

[(1, 28873880), (2, 14436940), (4, 7218470), (5, 5774776), (7, 4124840), (8, 3609235), (10, 2887388), (14, 2062420), (20, 1443694), (28, 1031210), (35, 824968), (40, 721847), (56, 515605), (70, 412484), (101, 285880), (140, 206242), (202, 142940), (280, 103121), (404, 71470), (505, 57176), (707, 40840), (808, 35735), (1010, 28588), (1021, 28280), (1414, 20420), (2020, 14294), (2042, 14140), (2828, 10210), (3535, 8168), (4040, 7147), (4084, 7070), (5105, 5656)]