19819605

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1$

素因数の和:166

約数の個数: 64

約数和(自身を含む): 36465408

約数和(自身を除く): 16645803

約数列:

[1, 3, 5, 13, 15, 37, 39, 41, 65, 67, 111, 123, 185, 195, 201, 205, 335, 481, 533, 555, 615, 871, 1005, 1443, 1517, 1599, 2405, 2479, 2613, 2665, 2747, 4355, 4551, 7215, 7437, 7585, 7995, 8241, 12395, 13065, 13735, 19721, 22755, 32227, 35711, 37185, 41205, 59163, 96681, 98605, 101639, 107133, 161135, 178555, 295815, 304917, 483405, 508195, 535665, 1321307, 1524585, 3963921, 6606535, 19819605]

約数ペア:

[(1, 19819605), (3, 6606535), (5, 3963921), (13, 1524585), (15, 1321307), (37, 535665), (39, 508195), (41, 483405), (65, 304917), (67, 295815), (111, 178555), (123, 161135), (185, 107133), (195, 101639), (201, 98605), (205, 96681), (335, 59163), (481, 41205), (533, 37185), (555, 35711), (615, 32227), (871, 22755), (1005, 19721), (1443, 13735), (1517, 13065), (1599, 12395), (2405, 8241), (2479, 7995), (2613, 7585), (2665, 7437), (2747, 7215), (4355, 4551)]