21886155

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{541}}^1$

素因数の和:612

約数の個数: 48

約数和(自身を含む): 40584960

約数和(自身を除く): 18698805

約数列:

[1, 3, 5, 9, 15, 29, 31, 45, 87, 93, 145, 155, 261, 279, 435, 465, 541, 899, 1305, 1395, 1623, 2697, 2705, 4495, 4869, 8091, 8115, 13485, 15689, 16771, 24345, 40455, 47067, 50313, 78445, 83855, 141201, 150939, 235335, 251565, 486359, 706005, 754695, 1459077, 2431795, 4377231, 7295385, 21886155]

約数ペア:

[(1, 21886155), (3, 7295385), (5, 4377231), (9, 2431795), (15, 1459077), (29, 754695), (31, 706005), (45, 486359), (87, 251565), (93, 235335), (145, 150939), (155, 141201), (261, 83855), (279, 78445), (435, 50313), (465, 47067), (541, 40455), (899, 24345), (1305, 16771), (1395, 15689), (1623, 13485), (2697, 8115), (2705, 8091), (4495, 4869)]