21328930

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{9829}}^1$

素因数の和:9874

約数の個数: 32

約数和(自身を含む): 45296640

約数和(自身を除く): 23967710

約数列:

[1, 2, 5, 7, 10, 14, 31, 35, 62, 70, 155, 217, 310, 434, 1085, 2170, 9829, 19658, 49145, 68803, 98290, 137606, 304699, 344015, 609398, 688030, 1523495, 2132893, 3046990, 4265786, 10664465, 21328930]

約数ペア:

[(1, 21328930), (2, 10664465), (5, 4265786), (7, 3046990), (10, 2132893), (14, 1523495), (31, 688030), (35, 609398), (62, 344015), (70, 304699), (155, 137606), (217, 98290), (310, 68803), (434, 49145), (1085, 19658), (2170, 9829)]