21197198

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{157}}^1$

素因数の和:225

約数の個数: 48

約数和(自身を含む): 39008304

約数和(自身を除く): 17811106

約数列:

[1, 2, 11, 17, 19, 22, 34, 38, 157, 187, 209, 314, 323, 361, 374, 418, 646, 722, 1727, 2669, 2983, 3454, 3553, 3971, 5338, 5966, 6137, 7106, 7942, 12274, 29359, 32813, 50711, 56677, 58718, 65626, 67507, 101422, 113354, 135014, 557821, 623447, 963509, 1115642, 1246894, 1927018, 10598599, 21197198]

約数ペア:

[(1, 21197198), (2, 10598599), (11, 1927018), (17, 1246894), (19, 1115642), (22, 963509), (34, 623447), (38, 557821), (157, 135014), (187, 113354), (209, 101422), (314, 67507), (323, 65626), (361, 58718), (374, 56677), (418, 50711), (646, 32813), (722, 29359), (1727, 12274), (2669, 7942), (2983, 7106), (3454, 6137), (3553, 5966), (3971, 5338)]