42890480

素因数分解:

$2^4\times 5^1\times {\mathrm{541}}^1\times {\mathrm{991}}^1$

素因数の和:1545

約数の個数: 40

約数和(自身を含む): 100005504

約数和(自身を除く): 57115024

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 541, 991, 1082, 1982, 2164, 2705, 3964, 4328, 4955, 5410, 7928, 8656, 9910, 10820, 15856, 19820, 21640, 39640, 43280, 79280, 536131, 1072262, 2144524, 2680655, 4289048, 5361310, 8578096, 10722620, 21445240, 42890480]

約数ペア:

[(1, 42890480), (2, 21445240), (4, 10722620), (5, 8578096), (8, 5361310), (10, 4289048), (16, 2680655), (20, 2144524), (40, 1072262), (80, 536131), (541, 79280), (991, 43280), (1082, 39640), (1982, 21640), (2164, 19820), (2705, 15856), (3964, 10820), (4328, 9910), (4955, 8656), (5410, 7928)]