18528895

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1$

素因数の和:208

約数の個数: 64

約数和(自身を含む): 31104000

約数和(自身を除く): 12575105

約数列:

[1, 5, 7, 11, 17, 19, 35, 55, 77, 85, 95, 119, 133, 149, 187, 209, 323, 385, 595, 665, 745, 935, 1043, 1045, 1309, 1463, 1615, 1639, 2261, 2533, 2831, 3553, 5215, 6545, 7315, 8195, 11305, 11473, 12665, 14155, 17731, 17765, 19817, 24871, 27863, 31141, 48127, 57365, 88655, 99085, 124355, 139315, 155705, 195041, 217987, 240635, 336889, 529397, 975205, 1089935, 1684445, 2646985, 3705779, 18528895]

約数ペア:

[(1, 18528895), (5, 3705779), (7, 2646985), (11, 1684445), (17, 1089935), (19, 975205), (35, 529397), (55, 336889), (77, 240635), (85, 217987), (95, 195041), (119, 155705), (133, 139315), (149, 124355), (187, 99085), (209, 88655), (323, 57365), (385, 48127), (595, 31141), (665, 27863), (745, 24871), (935, 19817), (1043, 17765), (1045, 17731), (1309, 14155), (1463, 12665), (1615, 11473), (1639, 11305), (2261, 8195), (2533, 7315), (2831, 6545), (3553, 5215)]