81595220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{5347}}^1$

素因数の和:5472

約数の個数: 48

約数和(自身を含む): 197662080

約数和(自身を除く): 116066860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 109, 140, 218, 436, 545, 763, 1090, 1526, 2180, 3052, 3815, 5347, 7630, 10694, 15260, 21388, 26735, 37429, 53470, 74858, 106940, 149716, 187145, 374290, 582823, 748580, 1165646, 2331292, 2914115, 4079761, 5828230, 8159522, 11656460, 16319044, 20398805, 40797610, 81595220]

約数ペア:

[(1, 81595220), (2, 40797610), (4, 20398805), (5, 16319044), (7, 11656460), (10, 8159522), (14, 5828230), (20, 4079761), (28, 2914115), (35, 2331292), (70, 1165646), (109, 748580), (140, 582823), (218, 374290), (436, 187145), (545, 149716), (763, 106940), (1090, 74858), (1526, 53470), (2180, 37429), (3052, 26735), (3815, 21388), (5347, 15260), (7630, 10694)]