19978380

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{36997}}^1$

素因数の和:37015

約数の個数: 48

約数和(自身を含む): 62156640

約数和(自身を除く): 42178260

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 36997, 73994, 110991, 147988, 184985, 221982, 332973, 369970, 443964, 554955, 665946, 739940, 998919, 1109910, 1331892, 1664865, 1997838, 2219820, 3329730, 3995676, 4994595, 6659460, 9989190, 19978380]

約数ペア:

[(1, 19978380), (2, 9989190), (3, 6659460), (4, 4994595), (5, 3995676), (6, 3329730), (9, 2219820), (10, 1997838), (12, 1664865), (15, 1331892), (18, 1109910), (20, 998919), (27, 739940), (30, 665946), (36, 554955), (45, 443964), (54, 369970), (60, 332973), (90, 221982), (108, 184985), (135, 147988), (180, 110991), (270, 73994), (540, 36997)]