21289835

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{499}}^1$

素因数の和:587

約数の個数: 32

約数和(自身を含む): 31104000

約数和(自身を除く): 9814165

約数列:

[1, 5, 7, 23, 35, 53, 115, 161, 265, 371, 499, 805, 1219, 1855, 2495, 3493, 6095, 8533, 11477, 17465, 26447, 42665, 57385, 80339, 132235, 185129, 401695, 608281, 925645, 3041405, 4257967, 21289835]

約数ペア:

[(1, 21289835), (5, 4257967), (7, 3041405), (23, 925645), (35, 608281), (53, 401695), (115, 185129), (161, 132235), (265, 80339), (371, 57385), (499, 42665), (805, 26447), (1219, 17465), (1855, 11477), (2495, 8533), (3493, 6095)]