20688007780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{173}}^1\times {\mathrm{12641}}^1$

素因数の和:12877

約数の個数: 96

約数和(自身を含む): 48780724608

約数和(自身を除く): 28092716828

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 43, 44, 55, 86, 110, 172, 173, 215, 220, 346, 430, 473, 692, 860, 865, 946, 1730, 1892, 1903, 2365, 3460, 3806, 4730, 7439, 7612, 9460, 9515, 12641, 14878, 19030, 25282, 29756, 37195, 38060, 50564, 63205, 74390, 81829, 126410, 139051, 148780, 163658, 252820, 278102, 327316, 409145, 543563, 556204, 695255, 818290, 1087126, 1390510, 1636580, 2174252, 2186893, 2717815, 2781020, 4373786, 5435630, 5979193, 8747572, 10871260, 10934465, 11958386, 21868930, 23916772, 24055823, 29895965, 43737860, 48111646, 59791930, 94036399, 96223292, 119583860, 120279115, 188072798, 240558230, 376145596, 470181995, 481116460, 940363990, 1034400389, 1880727980, 2068800778, 4137601556, 5172001945, 10344003890, 20688007780]

約数ペア:

[(1, 20688007780), (2, 10344003890), (4, 5172001945), (5, 4137601556), (10, 2068800778), (11, 1880727980), (20, 1034400389), (22, 940363990), (43, 481116460), (44, 470181995), (55, 376145596), (86, 240558230), (110, 188072798), (172, 120279115), (173, 119583860), (215, 96223292), (220, 94036399), (346, 59791930), (430, 48111646), (473, 43737860), (692, 29895965), (860, 24055823), (865, 23916772), (946, 21868930), (1730, 11958386), (1892, 10934465), (1903, 10871260), (2365, 8747572), (3460, 5979193), (3806, 5435630), (4730, 4373786), (7439, 2781020), (7612, 2717815), (9460, 2186893), (9515, 2174252), (12641, 1636580), (14878, 1390510), (19030, 1087126), (25282, 818290), (29756, 695255), (37195, 556204), (38060, 543563), (50564, 409145), (63205, 327316), (74390, 278102), (81829, 252820), (126410, 163658), (139051, 148780)]