19620520

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{15823}}^1$

素因数の和:15865

約数の個数: 32

約数和(自身を含む): 45573120

約数和(自身を除く): 25952600

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 15823, 31646, 63292, 79115, 126584, 158230, 316460, 490513, 632920, 981026, 1962052, 2452565, 3924104, 4905130, 9810260, 19620520]

約数ペア:

[(1, 19620520), (2, 9810260), (4, 4905130), (5, 3924104), (8, 2452565), (10, 1962052), (20, 981026), (31, 632920), (40, 490513), (62, 316460), (124, 158230), (155, 126584), (248, 79115), (310, 63292), (620, 31646), (1240, 15823)]