178221105

素因数分解:

$3^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{227}}^1\times {\mathrm{239}}^1$

素因数の和:550

約数の個数: 48

約数和(自身を含む): 315843840

約数和(自身を除く): 137622735

約数列:

[1, 3, 5, 9, 15, 45, 73, 219, 227, 239, 365, 657, 681, 717, 1095, 1135, 1195, 2043, 2151, 3285, 3405, 3585, 10215, 10755, 16571, 17447, 49713, 52341, 54253, 82855, 87235, 149139, 157023, 162759, 248565, 261705, 271265, 488277, 745695, 785115, 813795, 2441385, 3960469, 11881407, 19802345, 35644221, 59407035, 178221105]

約数ペア:

[(1, 178221105), (3, 59407035), (5, 35644221), (9, 19802345), (15, 11881407), (45, 3960469), (73, 2441385), (219, 813795), (227, 785115), (239, 745695), (365, 488277), (657, 271265), (681, 261705), (717, 248565), (1095, 162759), (1135, 157023), (1195, 149139), (2043, 87235), (2151, 82855), (3285, 54253), (3405, 52341), (3585, 49713), (10215, 17447), (10755, 16571)]