399394996

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{7673}}^1$

素因数の和:7721

約数の個数: 72

約数和(自身を含む): 943717824

約数和(自身を除く): 544322828

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 52, 77, 91, 143, 154, 169, 182, 286, 308, 338, 364, 572, 676, 1001, 1183, 1859, 2002, 2366, 3718, 4004, 4732, 7436, 7673, 13013, 15346, 26026, 30692, 52052, 53711, 84403, 99749, 107422, 168806, 199498, 214844, 337612, 398996, 590821, 698243, 1097239, 1181642, 1296737, 1396486, 2194478, 2363284, 2593474, 2792972, 4388956, 5186948, 7680673, 9077159, 14264107, 15361346, 18154318, 28528214, 30722692, 36308636, 57056428, 99848749, 199697498, 399394996]

約数ペア:

[(1, 399394996), (2, 199697498), (4, 99848749), (7, 57056428), (11, 36308636), (13, 30722692), (14, 28528214), (22, 18154318), (26, 15361346), (28, 14264107), (44, 9077159), (52, 7680673), (77, 5186948), (91, 4388956), (143, 2792972), (154, 2593474), (169, 2363284), (182, 2194478), (286, 1396486), (308, 1296737), (338, 1181642), (364, 1097239), (572, 698243), (676, 590821), (1001, 398996), (1183, 337612), (1859, 214844), (2002, 199498), (2366, 168806), (3718, 107422), (4004, 99749), (4732, 84403), (7436, 53711), (7673, 52052), (13013, 30692), (15346, 26026)]