21326980

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{653}}^1$

素因数の和:756

約数の個数: 48

約数和(自身を含む): 47464704

約数和(自身を除く): 26137724

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 71, 92, 115, 142, 230, 284, 355, 460, 653, 710, 1306, 1420, 1633, 2612, 3265, 3266, 6530, 6532, 8165, 13060, 15019, 16330, 30038, 32660, 46363, 60076, 75095, 92726, 150190, 185452, 231815, 300380, 463630, 927260, 1066349, 2132698, 4265396, 5331745, 10663490, 21326980]

約数ペア:

[(1, 21326980), (2, 10663490), (4, 5331745), (5, 4265396), (10, 2132698), (20, 1066349), (23, 927260), (46, 463630), (71, 300380), (92, 231815), (115, 185452), (142, 150190), (230, 92726), (284, 75095), (355, 60076), (460, 46363), (653, 32660), (710, 30038), (1306, 16330), (1420, 15019), (1633, 13060), (2612, 8165), (3265, 6532), (3266, 6530)]