638511360

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{257}}^1\times {\mathrm{647}}^1$

素因数の和:928

約数の個数: 144

約数和(自身を含む): 2050344576

約数和(自身を除く): 1411833216

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 256, 257, 320, 384, 480, 514, 640, 647, 768, 771, 960, 1028, 1280, 1285, 1294, 1542, 1920, 1941, 2056, 2570, 2588, 3084, 3235, 3840, 3855, 3882, 4112, 5140, 5176, 6168, 6470, 7710, 7764, 8224, 9705, 10280, 10352, 12336, 12940, 15420, 15528, 16448, 19410, 20560, 20704, 24672, 25880, 30840, 31056, 32896, 38820, 41120, 41408, 49344, 51760, 61680, 62112, 65792, 77640, 82240, 82816, 98688, 103520, 123360, 124224, 155280, 164480, 165632, 166279, 197376, 207040, 246720, 248448, 310560, 328960, 332558, 414080, 493440, 496896, 498837, 621120, 665116, 828160, 831395, 986880, 997674, 1242240, 1330232, 1662790, 1995348, 2484480, 2494185, 2660464, 3325580, 3990696, 4988370, 5320928, 6651160, 7981392, 9976740, 10641856, 13302320, 15962784, 19953480, 21283712, 26604640, 31925568, 39906960, 42567424, 53209280, 63851136, 79813920, 106418560, 127702272, 159627840, 212837120, 319255680, 638511360]

約数ペア:

[(1, 638511360), (2, 319255680), (3, 212837120), (4, 159627840), (5, 127702272), (6, 106418560), (8, 79813920), (10, 63851136), (12, 53209280), (15, 42567424), (16, 39906960), (20, 31925568), (24, 26604640), (30, 21283712), (32, 19953480), (40, 15962784), (48, 13302320), (60, 10641856), (64, 9976740), (80, 7981392), (96, 6651160), (120, 5320928), (128, 4988370), (160, 3990696), (192, 3325580), (240, 2660464), (256, 2494185), (257, 2484480), (320, 1995348), (384, 1662790), (480, 1330232), (514, 1242240), (640, 997674), (647, 986880), (768, 831395), (771, 828160), (960, 665116), (1028, 621120), (1280, 498837), (1285, 496896), (1294, 493440), (1542, 414080), (1920, 332558), (1941, 328960), (2056, 310560), (2570, 248448), (2588, 246720), (3084, 207040), (3235, 197376), (3840, 166279), (3855, 165632), (3882, 164480), (4112, 155280), (5140, 124224), (5176, 123360), (6168, 103520), (6470, 98688), (7710, 82816), (7764, 82240), (8224, 77640), (9705, 65792), (10280, 62112), (10352, 61680), (12336, 51760), (12940, 49344), (15420, 41408), (15528, 41120), (16448, 38820), (19410, 32896), (20560, 31056), (20704, 30840), (24672, 25880)]