19423719

素因数分解:

$3^5\times 7^1\times {\mathrm{19}}^1\times {\mathrm{601}}^1$

素因数の和:642

約数の個数: 48

約数和(自身を含む): 35060480

約数和(自身を除く): 15636761

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 81, 133, 171, 189, 243, 399, 513, 567, 601, 1197, 1539, 1701, 1803, 3591, 4207, 4617, 5409, 10773, 11419, 12621, 16227, 32319, 34257, 37863, 48681, 79933, 102771, 113589, 146043, 239799, 308313, 340767, 719397, 924939, 1022301, 2158191, 2774817, 6474573, 19423719]

約数ペア:

[(1, 19423719), (3, 6474573), (7, 2774817), (9, 2158191), (19, 1022301), (21, 924939), (27, 719397), (57, 340767), (63, 308313), (81, 239799), (133, 146043), (171, 113589), (189, 102771), (243, 79933), (399, 48681), (513, 37863), (567, 34257), (601, 32319), (1197, 16227), (1539, 12621), (1701, 11419), (1803, 10773), (3591, 5409), (4207, 4617)]