20916504

素因数分解:

$2^3\times 3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{883}}^1$

素因数の和:949

約数の個数: 96

約数和(自身を含む): 66193920

約数和(自身を除く): 45277416

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 28, 36, 42, 47, 56, 63, 72, 84, 94, 126, 141, 168, 188, 252, 282, 329, 376, 423, 504, 564, 658, 846, 883, 987, 1128, 1316, 1692, 1766, 1974, 2632, 2649, 2961, 3384, 3532, 3948, 5298, 5922, 6181, 7064, 7896, 7947, 10596, 11844, 12362, 15894, 18543, 21192, 23688, 24724, 31788, 37086, 41501, 49448, 55629, 63576, 74172, 83002, 111258, 124503, 148344, 166004, 222516, 249006, 290507, 332008, 373509, 445032, 498012, 581014, 747018, 871521, 996024, 1162028, 1494036, 1743042, 2324056, 2614563, 2988072, 3486084, 5229126, 6972168, 10458252, 20916504]

約数ペア:

[(1, 20916504), (2, 10458252), (3, 6972168), (4, 5229126), (6, 3486084), (7, 2988072), (8, 2614563), (9, 2324056), (12, 1743042), (14, 1494036), (18, 1162028), (21, 996024), (24, 871521), (28, 747018), (36, 581014), (42, 498012), (47, 445032), (56, 373509), (63, 332008), (72, 290507), (84, 249006), (94, 222516), (126, 166004), (141, 148344), (168, 124503), (188, 111258), (252, 83002), (282, 74172), (329, 63576), (376, 55629), (423, 49448), (504, 41501), (564, 37086), (658, 31788), (846, 24724), (883, 23688), (987, 21192), (1128, 18543), (1316, 15894), (1692, 12362), (1766, 11844), (1974, 10596), (2632, 7947), (2649, 7896), (2961, 7064), (3384, 6181), (3532, 5922), (3948, 5298)]