19924905

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1327}}^1$

素因数の和:1366

約数の個数: 64

約数和(自身を含む): 42835968

約数和(自身を除く): 22911063

約数列:

[1, 3, 5, 7, 11, 13, 15, 21, 33, 35, 39, 55, 65, 77, 91, 105, 143, 165, 195, 231, 273, 385, 429, 455, 715, 1001, 1155, 1327, 1365, 2145, 3003, 3981, 5005, 6635, 9289, 14597, 15015, 17251, 19905, 27867, 43791, 46445, 51753, 72985, 86255, 102179, 120757, 139335, 189761, 218955, 258765, 306537, 362271, 510895, 569283, 603785, 948805, 1328327, 1532685, 1811355, 2846415, 3984981, 6641635, 19924905]

約数ペア:

[(1, 19924905), (3, 6641635), (5, 3984981), (7, 2846415), (11, 1811355), (13, 1532685), (15, 1328327), (21, 948805), (33, 603785), (35, 569283), (39, 510895), (55, 362271), (65, 306537), (77, 258765), (91, 218955), (105, 189761), (143, 139335), (165, 120757), (195, 102179), (231, 86255), (273, 72985), (385, 51753), (429, 46445), (455, 43791), (715, 27867), (1001, 19905), (1155, 17251), (1327, 15015), (1365, 14597), (2145, 9289), (3003, 6635), (3981, 5005)]