19502990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{2113}}^1$

素因数の和:2204

約数の個数: 32

約数和(自身を含む): 38356416

約数和(自身を除く): 18853426

約数列:

[1, 2, 5, 10, 13, 26, 65, 71, 130, 142, 355, 710, 923, 1846, 2113, 4226, 4615, 9230, 10565, 21130, 27469, 54938, 137345, 150023, 274690, 300046, 750115, 1500230, 1950299, 3900598, 9751495, 19502990]

約数ペア:

[(1, 19502990), (2, 9751495), (5, 3900598), (10, 1950299), (13, 1500230), (26, 750115), (65, 300046), (71, 274690), (130, 150023), (142, 137345), (355, 54938), (710, 27469), (923, 21130), (1846, 10565), (2113, 9230), (4226, 4615)]