21542570

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{421}}^1$

素因数の和:495

約数の個数: 64

約数和(自身を含む): 48128256

約数和(自身を除く): 26585686

約数列:

[1, 2, 5, 7, 10, 14, 17, 34, 35, 43, 70, 85, 86, 119, 170, 215, 238, 301, 421, 430, 595, 602, 731, 842, 1190, 1462, 1505, 2105, 2947, 3010, 3655, 4210, 5117, 5894, 7157, 7310, 10234, 14314, 14735, 18103, 25585, 29470, 35785, 36206, 50099, 51170, 71570, 90515, 100198, 126721, 181030, 250495, 253442, 307751, 500990, 615502, 633605, 1267210, 1538755, 2154257, 3077510, 4308514, 10771285, 21542570]

約数ペア:

[(1, 21542570), (2, 10771285), (5, 4308514), (7, 3077510), (10, 2154257), (14, 1538755), (17, 1267210), (34, 633605), (35, 615502), (43, 500990), (70, 307751), (85, 253442), (86, 250495), (119, 181030), (170, 126721), (215, 100198), (238, 90515), (301, 71570), (421, 51170), (430, 50099), (595, 36206), (602, 35785), (731, 29470), (842, 25585), (1190, 18103), (1462, 14735), (1505, 14314), (2105, 10234), (2947, 7310), (3010, 7157), (3655, 5894), (4210, 5117)]