21909708

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{563}}^1$

素因数の和:643

約数の個数: 72

約数和(自身を含む): 59125248

約数和(自身を除く): 37215540

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 36, 46, 47, 69, 92, 94, 138, 141, 188, 207, 276, 282, 414, 423, 563, 564, 828, 846, 1081, 1126, 1689, 1692, 2162, 2252, 3243, 3378, 4324, 5067, 6486, 6756, 9729, 10134, 12949, 12972, 19458, 20268, 25898, 26461, 38847, 38916, 51796, 52922, 77694, 79383, 105844, 116541, 155388, 158766, 233082, 238149, 317532, 466164, 476298, 608603, 952596, 1217206, 1825809, 2434412, 3651618, 5477427, 7303236, 10954854, 21909708]

約数ペア:

[(1, 21909708), (2, 10954854), (3, 7303236), (4, 5477427), (6, 3651618), (9, 2434412), (12, 1825809), (18, 1217206), (23, 952596), (36, 608603), (46, 476298), (47, 466164), (69, 317532), (92, 238149), (94, 233082), (138, 158766), (141, 155388), (188, 116541), (207, 105844), (276, 79383), (282, 77694), (414, 52922), (423, 51796), (563, 38916), (564, 38847), (828, 26461), (846, 25898), (1081, 20268), (1126, 19458), (1689, 12972), (1692, 12949), (2162, 10134), (2252, 9729), (3243, 6756), (3378, 6486), (4324, 5067)]