2640804720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{1993}}^1\times {\mathrm{5521}}^1$

素因数の和:7530

約数の個数: 80

約数和(自身を含む): 8192085792

約数和(自身を除く): 5551281072

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 1993, 3986, 5521, 5979, 7972, 9965, 11042, 11958, 15944, 16563, 19930, 22084, 23916, 27605, 29895, 31888, 33126, 39860, 44168, 47832, 55210, 59790, 66252, 79720, 82815, 88336, 95664, 110420, 119580, 132504, 159440, 165630, 220840, 239160, 265008, 331260, 441680, 478320, 662520, 1325040, 11003353, 22006706, 33010059, 44013412, 55016765, 66020118, 88026824, 110033530, 132040236, 165050295, 176053648, 220067060, 264080472, 330100590, 440134120, 528160944, 660201180, 880268240, 1320402360, 2640804720]

約数ペア:

[(1, 2640804720), (2, 1320402360), (3, 880268240), (4, 660201180), (5, 528160944), (6, 440134120), (8, 330100590), (10, 264080472), (12, 220067060), (15, 176053648), (16, 165050295), (20, 132040236), (24, 110033530), (30, 88026824), (40, 66020118), (48, 55016765), (60, 44013412), (80, 33010059), (120, 22006706), (240, 11003353), (1993, 1325040), (3986, 662520), (5521, 478320), (5979, 441680), (7972, 331260), (9965, 265008), (11042, 239160), (11958, 220840), (15944, 165630), (16563, 159440), (19930, 132504), (22084, 119580), (23916, 110420), (27605, 95664), (29895, 88336), (31888, 82815), (33126, 79720), (39860, 66252), (44168, 59790), (47832, 55210)]