72840820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{281}}^1\times {\mathrm{997}}^1$

素因数の和:1300

約数の個数: 48

約数和(自身を含む): 165484368

約数和(自身を除く): 92643548

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 281, 562, 997, 1124, 1405, 1994, 2810, 3653, 3988, 4985, 5620, 7306, 9970, 12961, 14612, 18265, 19940, 25922, 36530, 51844, 64805, 73060, 129610, 259220, 280157, 560314, 1120628, 1400785, 2801570, 3642041, 5603140, 7284082, 14568164, 18210205, 36420410, 72840820]

約数ペア:

[(1, 72840820), (2, 36420410), (4, 18210205), (5, 14568164), (10, 7284082), (13, 5603140), (20, 3642041), (26, 2801570), (52, 1400785), (65, 1120628), (130, 560314), (260, 280157), (281, 259220), (562, 129610), (997, 73060), (1124, 64805), (1405, 51844), (1994, 36530), (2810, 25922), (3653, 19940), (3988, 18265), (4985, 14612), (5620, 12961), (7306, 9970)]