21512470

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{1021}}^1$

素因数の和:1085

約数の個数: 48

約数和(自身を含む): 46137168

約数和(自身を除く): 24624698

約数列:

[1, 2, 5, 7, 10, 14, 35, 43, 49, 70, 86, 98, 215, 245, 301, 430, 490, 602, 1021, 1505, 2042, 2107, 3010, 4214, 5105, 7147, 10210, 10535, 14294, 21070, 35735, 43903, 50029, 71470, 87806, 100058, 219515, 250145, 307321, 439030, 500290, 614642, 1536605, 2151247, 3073210, 4302494, 10756235, 21512470]

約数ペア:

[(1, 21512470), (2, 10756235), (5, 4302494), (7, 3073210), (10, 2151247), (14, 1536605), (35, 614642), (43, 500290), (49, 439030), (70, 307321), (86, 250145), (98, 219515), (215, 100058), (245, 87806), (301, 71470), (430, 50029), (490, 43903), (602, 35735), (1021, 21070), (1505, 14294), (2042, 10535), (2107, 10210), (3010, 7147), (4214, 5105)]