21000888

素因数分解:

$2^3\times 3^2\times {\mathrm{31}}^1\times {\mathrm{97}}^2$

素因数の和:237

約数の個数: 72

約数和(自身を含む): 59323680

約数和(自身を除く): 38322792

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 31, 36, 62, 72, 93, 97, 124, 186, 194, 248, 279, 291, 372, 388, 558, 582, 744, 776, 873, 1116, 1164, 1746, 2232, 2328, 3007, 3492, 6014, 6984, 9021, 9409, 12028, 18042, 18818, 24056, 27063, 28227, 36084, 37636, 54126, 56454, 72168, 75272, 84681, 108252, 112908, 169362, 216504, 225816, 291679, 338724, 583358, 677448, 875037, 1166716, 1750074, 2333432, 2625111, 3500148, 5250222, 7000296, 10500444, 21000888]

約数ペア:

[(1, 21000888), (2, 10500444), (3, 7000296), (4, 5250222), (6, 3500148), (8, 2625111), (9, 2333432), (12, 1750074), (18, 1166716), (24, 875037), (31, 677448), (36, 583358), (62, 338724), (72, 291679), (93, 225816), (97, 216504), (124, 169362), (186, 112908), (194, 108252), (248, 84681), (279, 75272), (291, 72168), (372, 56454), (388, 54126), (558, 37636), (582, 36084), (744, 28227), (776, 27063), (873, 24056), (1116, 18818), (1164, 18042), (1746, 12028), (2232, 9409), (2328, 9021), (3007, 6984), (3492, 6014)]