21195776

素因数分解:

$2^{10}\times 7^1\times {\mathrm{2957}}^1$

素因数の和:2984

約数の個数: 44

約数和(自身を含む): 48440208

約数和(自身を除く): 27244432

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 256, 448, 512, 896, 1024, 1792, 2957, 3584, 5914, 7168, 11828, 20699, 23656, 41398, 47312, 82796, 94624, 165592, 189248, 331184, 378496, 662368, 756992, 1324736, 1513984, 2649472, 3027968, 5298944, 10597888, 21195776]

約数ペア:

[(1, 21195776), (2, 10597888), (4, 5298944), (7, 3027968), (8, 2649472), (14, 1513984), (16, 1324736), (28, 756992), (32, 662368), (56, 378496), (64, 331184), (112, 189248), (128, 165592), (224, 94624), (256, 82796), (448, 47312), (512, 41398), (896, 23656), (1024, 20699), (1792, 11828), (2957, 7168), (3584, 5914)]