21969130

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{2689}}^1$

素因数の和:2758

約数の個数: 32

約数和(自身を含む): 42609600

約数和(自身を除く): 20640470

約数列:

[1, 2, 5, 10, 19, 38, 43, 86, 95, 190, 215, 430, 817, 1634, 2689, 4085, 5378, 8170, 13445, 26890, 51091, 102182, 115627, 231254, 255455, 510910, 578135, 1156270, 2196913, 4393826, 10984565, 21969130]

約数ペア:

[(1, 21969130), (2, 10984565), (5, 4393826), (10, 2196913), (19, 1156270), (38, 578135), (43, 510910), (86, 255455), (95, 231254), (190, 115627), (215, 102182), (430, 51091), (817, 26890), (1634, 13445), (2689, 8170), (4085, 5378)]