21391848

素因数分解:

$2^3\times 3^2\times {\mathrm{17}}^1\times {\mathrm{17477}}^1$

素因数の和:17506

約数の個数: 48

約数和(自身を含む): 61347780

約数和(自身を除く): 39955932

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 17, 18, 24, 34, 36, 51, 68, 72, 102, 136, 153, 204, 306, 408, 612, 1224, 17477, 34954, 52431, 69908, 104862, 139816, 157293, 209724, 297109, 314586, 419448, 594218, 629172, 891327, 1188436, 1258344, 1782654, 2376872, 2673981, 3565308, 5347962, 7130616, 10695924, 21391848]

約数ペア:

[(1, 21391848), (2, 10695924), (3, 7130616), (4, 5347962), (6, 3565308), (8, 2673981), (9, 2376872), (12, 1782654), (17, 1258344), (18, 1188436), (24, 891327), (34, 629172), (36, 594218), (51, 419448), (68, 314586), (72, 297109), (102, 209724), (136, 157293), (153, 139816), (204, 104862), (306, 69908), (408, 52431), (612, 34954), (1224, 17477)]