19503280

素因数分解:

$2^4\times 5^1\times {\mathrm{131}}^1\times {\mathrm{1861}}^1$

素因数の和:2005

約数の個数: 40

約数和(自身を含む): 45715824

約数和(自身を除く): 26212544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 131, 262, 524, 655, 1048, 1310, 1861, 2096, 2620, 3722, 5240, 7444, 9305, 10480, 14888, 18610, 29776, 37220, 74440, 148880, 243791, 487582, 975164, 1218955, 1950328, 2437910, 3900656, 4875820, 9751640, 19503280]

約数ペア:

[(1, 19503280), (2, 9751640), (4, 4875820), (5, 3900656), (8, 2437910), (10, 1950328), (16, 1218955), (20, 975164), (40, 487582), (80, 243791), (131, 148880), (262, 74440), (524, 37220), (655, 29776), (1048, 18610), (1310, 14888), (1861, 10480), (2096, 9305), (2620, 7444), (3722, 5240)]