19927880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71171}}^1$

素因数の和:71189

約数の個数: 32

約数和(自身を含む): 51243840

約数和(自身を除く): 31315960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 71171, 142342, 284684, 355855, 498197, 569368, 711710, 996394, 1423420, 1992788, 2490985, 2846840, 3985576, 4981970, 9963940, 19927880]

約数ペア:

[(1, 19927880), (2, 9963940), (4, 4981970), (5, 3985576), (7, 2846840), (8, 2490985), (10, 1992788), (14, 1423420), (20, 996394), (28, 711710), (35, 569368), (40, 498197), (56, 355855), (70, 284684), (140, 142342), (280, 71171)]