19953993605

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{509}}^1\times {\mathrm{2971}}^1$

素因数の和:3534

約数の個数: 64

約数和(自身を含む): 30556915200

約数和(自身を除く): 10602921595

約数列:

[1, 5, 7, 13, 29, 35, 65, 91, 145, 203, 377, 455, 509, 1015, 1885, 2545, 2639, 2971, 3563, 6617, 13195, 14761, 14855, 17815, 20797, 33085, 38623, 46319, 73805, 86159, 103327, 103985, 191893, 193115, 231595, 270361, 430795, 516635, 603113, 959465, 1120067, 1343251, 1351805, 1512239, 3015565, 5600335, 6716255, 7561195, 7840469, 10585673, 19659107, 39202345, 43854931, 52928365, 98295535, 137613749, 219274655, 306984517, 570114103, 688068745, 1534922585, 2850570515, 3990798721, 19953993605]

約数ペア:

[(1, 19953993605), (5, 3990798721), (7, 2850570515), (13, 1534922585), (29, 688068745), (35, 570114103), (65, 306984517), (91, 219274655), (145, 137613749), (203, 98295535), (377, 52928365), (455, 43854931), (509, 39202345), (1015, 19659107), (1885, 10585673), (2545, 7840469), (2639, 7561195), (2971, 6716255), (3563, 5600335), (6617, 3015565), (13195, 1512239), (14761, 1351805), (14855, 1343251), (17815, 1120067), (20797, 959465), (33085, 603113), (38623, 516635), (46319, 430795), (73805, 270361), (86159, 231595), (103327, 193115), (103985, 191893)]