21534220

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{929}}^1$

素因数の和:1018

約数の個数: 48

約数和(自身を含む): 48434400

約数和(自身を除く): 26900180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 61, 76, 95, 122, 190, 244, 305, 380, 610, 929, 1159, 1220, 1858, 2318, 3716, 4636, 4645, 5795, 9290, 11590, 17651, 18580, 23180, 35302, 56669, 70604, 88255, 113338, 176510, 226676, 283345, 353020, 566690, 1076711, 1133380, 2153422, 4306844, 5383555, 10767110, 21534220]

約数ペア:

[(1, 21534220), (2, 10767110), (4, 5383555), (5, 4306844), (10, 2153422), (19, 1133380), (20, 1076711), (38, 566690), (61, 353020), (76, 283345), (95, 226676), (122, 176510), (190, 113338), (244, 88255), (305, 70604), (380, 56669), (610, 35302), (929, 23180), (1159, 18580), (1220, 17651), (1858, 11590), (2318, 9290), (3716, 5795), (4636, 4645)]