21572650

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{643}}^1$

素因数の和:727

約数の個数: 48

約数和(自身を含む): 44559648

約数和(自身を除く): 22986998

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 61, 110, 122, 275, 305, 550, 610, 643, 671, 1286, 1342, 1525, 3050, 3215, 3355, 6430, 6710, 7073, 14146, 16075, 16775, 32150, 33550, 35365, 39223, 70730, 78446, 176825, 196115, 353650, 392230, 431453, 862906, 980575, 1961150, 2157265, 4314530, 10786325, 21572650]

約数ペア:

[(1, 21572650), (2, 10786325), (5, 4314530), (10, 2157265), (11, 1961150), (22, 980575), (25, 862906), (50, 431453), (55, 392230), (61, 353650), (110, 196115), (122, 176825), (275, 78446), (305, 70730), (550, 39223), (610, 35365), (643, 33550), (671, 32150), (1286, 16775), (1342, 16075), (1525, 14146), (3050, 7073), (3215, 6710), (3355, 6430)]