18821295

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{139}}^1$

素因数の和:229

約数の個数: 64

約数和(自身を含む): 36288000

約数和(自身を除く): 17466705

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 59, 85, 135, 139, 153, 177, 255, 295, 417, 459, 531, 695, 765, 885, 1003, 1251, 1593, 2085, 2295, 2363, 2655, 3009, 3753, 5015, 6255, 7089, 7965, 8201, 9027, 11815, 15045, 18765, 21267, 24603, 27081, 35445, 41005, 45135, 63801, 73809, 106335, 123015, 135405, 139417, 221427, 319005, 369045, 418251, 697085, 1107135, 1254753, 2091255, 3764259, 6273765, 18821295]

約数ペア:

[(1, 18821295), (3, 6273765), (5, 3764259), (9, 2091255), (15, 1254753), (17, 1107135), (27, 697085), (45, 418251), (51, 369045), (59, 319005), (85, 221427), (135, 139417), (139, 135405), (153, 123015), (177, 106335), (255, 73809), (295, 63801), (417, 45135), (459, 41005), (531, 35445), (695, 27081), (765, 24603), (885, 21267), (1003, 18765), (1251, 15045), (1593, 11815), (2085, 9027), (2295, 8201), (2363, 7965), (2655, 7089), (3009, 6255), (3753, 5015)]