18644871

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{563}}^1$

素因数の和:675

約数の個数: 32

約数和(自身を含む): 30320640

約数和(自身を除く): 11675769

約数列:

[1, 3, 7, 19, 21, 57, 83, 133, 249, 399, 563, 581, 1577, 1689, 1743, 3941, 4731, 10697, 11039, 11823, 32091, 33117, 46729, 74879, 140187, 224637, 327103, 887851, 981309, 2663553, 6214957, 18644871]

約数ペア:

[(1, 18644871), (3, 6214957), (7, 2663553), (19, 981309), (21, 887851), (57, 327103), (83, 224637), (133, 140187), (249, 74879), (399, 46729), (563, 33117), (581, 32091), (1577, 11823), (1689, 11039), (1743, 10697), (3941, 4731)]