21603255

素因数分解:

$3^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1\times {\mathrm{181}}^1$

素因数の和:371

約数の個数: 32

約数和(自身を含む): 35555520

約数和(自身を除く): 13952265

約数列:

[1, 3, 5, 15, 73, 109, 181, 219, 327, 365, 543, 545, 905, 1095, 1635, 2715, 7957, 13213, 19729, 23871, 39639, 39785, 59187, 66065, 98645, 119355, 198195, 295935, 1440217, 4320651, 7201085, 21603255]

約数ペア:

[(1, 21603255), (3, 7201085), (5, 4320651), (15, 1440217), (73, 295935), (109, 198195), (181, 119355), (219, 98645), (327, 66065), (365, 59187), (543, 39785), (545, 39639), (905, 23871), (1095, 19729), (1635, 13213), (2715, 7957)]