19472481

素因数分解:

$3^4\times 7^1\times {\mathrm{61}}^1\times {\mathrm{563}}^1$

素因数の和:643

約数の個数: 40

約数和(自身を含む): 33849024

約数和(自身を除く): 14376543

約数列:

[1, 3, 7, 9, 21, 27, 61, 63, 81, 183, 189, 427, 549, 563, 567, 1281, 1647, 1689, 3843, 3941, 4941, 5067, 11529, 11823, 15201, 34343, 34587, 35469, 45603, 103029, 106407, 240401, 309087, 319221, 721203, 927261, 2163609, 2781783, 6490827, 19472481]

約数ペア:

[(1, 19472481), (3, 6490827), (7, 2781783), (9, 2163609), (21, 927261), (27, 721203), (61, 319221), (63, 309087), (81, 240401), (183, 106407), (189, 103029), (427, 45603), (549, 35469), (563, 34587), (567, 34343), (1281, 15201), (1647, 11823), (1689, 11529), (3843, 5067), (3941, 4941)]