21142935

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^3\times {\mathrm{353}}^1$

素因数の和:397

約数の個数: 48

約数和(自身を含む): 40423968

約数和(自身を除く): 19281033

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 121, 165, 353, 363, 495, 605, 1059, 1089, 1331, 1765, 1815, 3177, 3883, 3993, 5295, 5445, 6655, 11649, 11979, 15885, 19415, 19965, 34947, 42713, 58245, 59895, 128139, 174735, 213565, 384417, 469843, 640695, 1409529, 1922085, 2349215, 4228587, 7047645, 21142935]

約数ペア:

[(1, 21142935), (3, 7047645), (5, 4228587), (9, 2349215), (11, 1922085), (15, 1409529), (33, 640695), (45, 469843), (55, 384417), (99, 213565), (121, 174735), (165, 128139), (353, 59895), (363, 58245), (495, 42713), (605, 34947), (1059, 19965), (1089, 19415), (1331, 15885), (1765, 11979), (1815, 11649), (3177, 6655), (3883, 5445), (3993, 5295)]