21778965

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{631}}^1$

素因数の和:714

約数の個数: 48

約数和(自身を含む): 41408640

約数和(自身を除く): 19629675

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 59, 65, 117, 177, 195, 295, 531, 585, 631, 767, 885, 1893, 2301, 2655, 3155, 3835, 5679, 6903, 8203, 9465, 11505, 24609, 28395, 34515, 37229, 41015, 73827, 111687, 123045, 186145, 335061, 369135, 483977, 558435, 1451931, 1675305, 2419885, 4355793, 7259655, 21778965]

約数ペア:

[(1, 21778965), (3, 7259655), (5, 4355793), (9, 2419885), (13, 1675305), (15, 1451931), (39, 558435), (45, 483977), (59, 369135), (65, 335061), (117, 186145), (177, 123045), (195, 111687), (295, 73827), (531, 41015), (585, 37229), (631, 34515), (767, 28395), (885, 24609), (1893, 11505), (2301, 9465), (2655, 8203), (3155, 6903), (3835, 5679)]