20805601360

素因数分解:

$2^4\times 5^1\times {\mathrm{457}}^1\times {\mathrm{569081}}^1$

素因数の和:569551

約数の個数: 40

約数和(自身を含む): 48478957416

約数和(自身を除く): 27673356056

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 457, 914, 1828, 2285, 3656, 4570, 7312, 9140, 18280, 36560, 569081, 1138162, 2276324, 2845405, 4552648, 5690810, 9105296, 11381620, 22763240, 45526480, 260070017, 520140034, 1040280068, 1300350085, 2080560136, 2600700170, 4161120272, 5201400340, 10402800680, 20805601360]

約数ペア:

[(1, 20805601360), (2, 10402800680), (4, 5201400340), (5, 4161120272), (8, 2600700170), (10, 2080560136), (16, 1300350085), (20, 1040280068), (40, 520140034), (80, 260070017), (457, 45526480), (914, 22763240), (1828, 11381620), (2285, 9105296), (3656, 5690810), (4570, 4552648), (7312, 2845405), (9140, 2276324), (18280, 1138162), (36560, 569081)]