321959440

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{5153}}^1$

素因数の和:5248

約数の個数: 80

約数和(自身を含む): 828268416

約数和(自身を除く): 506308976

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 71, 80, 88, 110, 142, 176, 220, 284, 355, 440, 568, 710, 781, 880, 1136, 1420, 1562, 2840, 3124, 3905, 5153, 5680, 6248, 7810, 10306, 12496, 15620, 20612, 25765, 31240, 41224, 51530, 56683, 62480, 82448, 103060, 113366, 206120, 226732, 283415, 365863, 412240, 453464, 566830, 731726, 906928, 1133660, 1463452, 1829315, 2267320, 2926904, 3658630, 4024493, 4534640, 5853808, 7317260, 8048986, 14634520, 16097972, 20122465, 29269040, 32195944, 40244930, 64391888, 80489860, 160979720, 321959440]

約数ペア:

[(1, 321959440), (2, 160979720), (4, 80489860), (5, 64391888), (8, 40244930), (10, 32195944), (11, 29269040), (16, 20122465), (20, 16097972), (22, 14634520), (40, 8048986), (44, 7317260), (55, 5853808), (71, 4534640), (80, 4024493), (88, 3658630), (110, 2926904), (142, 2267320), (176, 1829315), (220, 1463452), (284, 1133660), (355, 906928), (440, 731726), (568, 566830), (710, 453464), (781, 412240), (880, 365863), (1136, 283415), (1420, 226732), (1562, 206120), (2840, 113366), (3124, 103060), (3905, 82448), (5153, 62480), (5680, 56683), (6248, 51530), (7810, 41224), (10306, 31240), (12496, 25765), (15620, 20612)]