21125730

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1801}}^1$

素因数の和:1851

約数の個数: 64

約数和(自身を含む): 56049408

約数和(自身を除く): 34923678

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 23, 30, 34, 46, 51, 69, 85, 102, 115, 138, 170, 230, 255, 345, 391, 510, 690, 782, 1173, 1801, 1955, 2346, 3602, 3910, 5403, 5865, 9005, 10806, 11730, 18010, 27015, 30617, 41423, 54030, 61234, 82846, 91851, 124269, 153085, 183702, 207115, 248538, 306170, 414230, 459255, 621345, 704191, 918510, 1242690, 1408382, 2112573, 3520955, 4225146, 7041910, 10562865, 21125730]

約数ペア:

[(1, 21125730), (2, 10562865), (3, 7041910), (5, 4225146), (6, 3520955), (10, 2112573), (15, 1408382), (17, 1242690), (23, 918510), (30, 704191), (34, 621345), (46, 459255), (51, 414230), (69, 306170), (85, 248538), (102, 207115), (115, 183702), (138, 153085), (170, 124269), (230, 91851), (255, 82846), (345, 61234), (391, 54030), (510, 41423), (690, 30617), (782, 27015), (1173, 18010), (1801, 11730), (1955, 10806), (2346, 9005), (3602, 5865), (3910, 5403)]