18228100

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{227}}^1$

素因数の和:325

約数の個数: 72

約数和(自身を含む): 43934688

約数和(自身を除く): 25706588

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 73, 100, 110, 146, 220, 227, 275, 292, 365, 454, 550, 730, 803, 908, 1100, 1135, 1460, 1606, 1825, 2270, 2497, 3212, 3650, 4015, 4540, 4994, 5675, 7300, 8030, 9988, 11350, 12485, 16060, 16571, 20075, 22700, 24970, 33142, 40150, 49940, 62425, 66284, 80300, 82855, 124850, 165710, 182281, 249700, 331420, 364562, 414275, 729124, 828550, 911405, 1657100, 1822810, 3645620, 4557025, 9114050, 18228100]

約数ペア:

[(1, 18228100), (2, 9114050), (4, 4557025), (5, 3645620), (10, 1822810), (11, 1657100), (20, 911405), (22, 828550), (25, 729124), (44, 414275), (50, 364562), (55, 331420), (73, 249700), (100, 182281), (110, 165710), (146, 124850), (220, 82855), (227, 80300), (275, 66284), (292, 62425), (365, 49940), (454, 40150), (550, 33142), (730, 24970), (803, 22700), (908, 20075), (1100, 16571), (1135, 16060), (1460, 12485), (1606, 11350), (1825, 9988), (2270, 8030), (2497, 7300), (3212, 5675), (3650, 4994), (4015, 4540)]