21490448

素因数分解:

$2^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{11287}}^1$

素因数の和:11319

約数の個数: 40

約数和(自身を含む): 50389632

約数和(自身を除く): 28899184

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 34, 56, 68, 112, 119, 136, 238, 272, 476, 952, 1904, 11287, 22574, 45148, 79009, 90296, 158018, 180592, 191879, 316036, 383758, 632072, 767516, 1264144, 1343153, 1535032, 2686306, 3070064, 5372612, 10745224, 21490448]

約数ペア:

[(1, 21490448), (2, 10745224), (4, 5372612), (7, 3070064), (8, 2686306), (14, 1535032), (16, 1343153), (17, 1264144), (28, 767516), (34, 632072), (56, 383758), (68, 316036), (112, 191879), (119, 180592), (136, 158018), (238, 90296), (272, 79009), (476, 45148), (952, 22574), (1904, 11287)]