19815740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{2399}}^1$

素因数の和:2474

約数の個数: 48

約数和(自身を含む): 48384000

約数和(自身を除く): 28568260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 59, 70, 118, 140, 236, 295, 413, 590, 826, 1180, 1652, 2065, 2399, 4130, 4798, 8260, 9596, 11995, 16793, 23990, 33586, 47980, 67172, 83965, 141541, 167930, 283082, 335860, 566164, 707705, 990787, 1415410, 1981574, 2830820, 3963148, 4953935, 9907870, 19815740]

約数ペア:

[(1, 19815740), (2, 9907870), (4, 4953935), (5, 3963148), (7, 2830820), (10, 1981574), (14, 1415410), (20, 990787), (28, 707705), (35, 566164), (59, 335860), (70, 283082), (118, 167930), (140, 141541), (236, 83965), (295, 67172), (413, 47980), (590, 33586), (826, 23990), (1180, 16793), (1652, 11995), (2065, 9596), (2399, 8260), (4130, 4798)]