81640320

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{421}}^1$

素因数の和:544

約数の個数: 128

約数和(自身を含む): 263429280

約数和(自身を除く): 181788960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 101, 120, 128, 160, 192, 202, 240, 303, 320, 384, 404, 421, 480, 505, 606, 640, 808, 842, 960, 1010, 1212, 1263, 1515, 1616, 1684, 1920, 2020, 2105, 2424, 2526, 3030, 3232, 3368, 4040, 4210, 4848, 5052, 6060, 6315, 6464, 6736, 8080, 8420, 9696, 10104, 12120, 12630, 12928, 13472, 16160, 16840, 19392, 20208, 24240, 25260, 26944, 32320, 33680, 38784, 40416, 42521, 48480, 50520, 53888, 64640, 67360, 80832, 85042, 96960, 101040, 127563, 134720, 161664, 170084, 193920, 202080, 212605, 255126, 269440, 340168, 404160, 425210, 510252, 637815, 680336, 808320, 850420, 1020504, 1275630, 1360672, 1700840, 2041008, 2551260, 2721344, 3401680, 4082016, 5102520, 5442688, 6803360, 8164032, 10205040, 13606720, 16328064, 20410080, 27213440, 40820160, 81640320]

約数ペア:

[(1, 81640320), (2, 40820160), (3, 27213440), (4, 20410080), (5, 16328064), (6, 13606720), (8, 10205040), (10, 8164032), (12, 6803360), (15, 5442688), (16, 5102520), (20, 4082016), (24, 3401680), (30, 2721344), (32, 2551260), (40, 2041008), (48, 1700840), (60, 1360672), (64, 1275630), (80, 1020504), (96, 850420), (101, 808320), (120, 680336), (128, 637815), (160, 510252), (192, 425210), (202, 404160), (240, 340168), (303, 269440), (320, 255126), (384, 212605), (404, 202080), (421, 193920), (480, 170084), (505, 161664), (606, 134720), (640, 127563), (808, 101040), (842, 96960), (960, 85042), (1010, 80832), (1212, 67360), (1263, 64640), (1515, 53888), (1616, 50520), (1684, 48480), (1920, 42521), (2020, 40416), (2105, 38784), (2424, 33680), (2526, 32320), (3030, 26944), (3232, 25260), (3368, 24240), (4040, 20208), (4210, 19392), (4848, 16840), (5052, 16160), (6060, 13472), (6315, 12928), (6464, 12630), (6736, 12120), (8080, 10104), (8420, 9696)]