19776603

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{181}}^1$

素因数の和:256

約数の個数: 48

約数和(自身を含む): 34082048

約数和(自身を除く): 14305445

約数列:

[1, 3, 7, 11, 21, 33, 43, 77, 121, 129, 181, 231, 301, 363, 473, 543, 847, 903, 1267, 1419, 1991, 2541, 3311, 3801, 5203, 5973, 7783, 9933, 13937, 15609, 21901, 23349, 36421, 41811, 54481, 65703, 85613, 109263, 153307, 163443, 256839, 459921, 599291, 941743, 1797873, 2825229, 6592201, 19776603]

約数ペア:

[(1, 19776603), (3, 6592201), (7, 2825229), (11, 1797873), (21, 941743), (33, 599291), (43, 459921), (77, 256839), (121, 163443), (129, 153307), (181, 109263), (231, 85613), (301, 65703), (363, 54481), (473, 41811), (543, 36421), (847, 23349), (903, 21901), (1267, 15609), (1419, 13937), (1991, 9933), (2541, 7783), (3311, 5973), (3801, 5203)]