20757540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{347}}^1\times {\mathrm{997}}^1$

素因数の和:1356

約数の個数: 48

約数和(自身を含む): 58347072

約数和(自身を除く): 37589532

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 347, 694, 997, 1041, 1388, 1735, 1994, 2082, 2991, 3470, 3988, 4164, 4985, 5205, 5982, 6940, 9970, 10410, 11964, 14955, 19940, 20820, 29910, 59820, 345959, 691918, 1037877, 1383836, 1729795, 2075754, 3459590, 4151508, 5189385, 6919180, 10378770, 20757540]

約数ペア:

[(1, 20757540), (2, 10378770), (3, 6919180), (4, 5189385), (5, 4151508), (6, 3459590), (10, 2075754), (12, 1729795), (15, 1383836), (20, 1037877), (30, 691918), (60, 345959), (347, 59820), (694, 29910), (997, 20820), (1041, 19940), (1388, 14955), (1735, 11964), (1994, 10410), (2082, 9970), (2991, 6940), (3470, 5982), (3988, 5205), (4164, 4985)]