21535395

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{317}}^1\times {\mathrm{647}}^1$

素因数の和:979

約数の個数: 32

約数和(自身を含む): 39564288

約数和(自身を除く): 18028893

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 317, 647, 951, 1585, 1941, 2219, 3235, 4529, 4755, 6657, 9705, 11095, 13587, 22645, 33285, 67935, 205099, 615297, 1025495, 1435693, 3076485, 4307079, 7178465, 21535395]

約数ペア:

[(1, 21535395), (3, 7178465), (5, 4307079), (7, 3076485), (15, 1435693), (21, 1025495), (35, 615297), (105, 205099), (317, 67935), (647, 33285), (951, 22645), (1585, 13587), (1941, 11095), (2219, 9705), (3235, 6657), (4529, 4755)]