20908544

素因数分解:

$2^9\times {\mathrm{97}}^1\times {\mathrm{421}}^1$

素因数の和:536

約数の個数: 40

約数和(自身を含む): 42307188

約数和(自身を除く): 21398644

約数列:

[1, 2, 4, 8, 16, 32, 64, 97, 128, 194, 256, 388, 421, 512, 776, 842, 1552, 1684, 3104, 3368, 6208, 6736, 12416, 13472, 24832, 26944, 40837, 49664, 53888, 81674, 107776, 163348, 215552, 326696, 653392, 1306784, 2613568, 5227136, 10454272, 20908544]

約数ペア:

[(1, 20908544), (2, 10454272), (4, 5227136), (8, 2613568), (16, 1306784), (32, 653392), (64, 326696), (97, 215552), (128, 163348), (194, 107776), (256, 81674), (388, 53888), (421, 49664), (512, 40837), (776, 26944), (842, 24832), (1552, 13472), (1684, 12416), (3104, 6736), (3368, 6208)]