78685440

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{661}}^1$

素因数の和:716

約数の個数: 144

約数和(自身を含む): 259800576

約数和(自身を除く): 181115136

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 32, 40, 48, 60, 62, 64, 80, 93, 96, 120, 124, 128, 155, 160, 186, 192, 240, 248, 256, 310, 320, 372, 384, 465, 480, 496, 620, 640, 661, 744, 768, 930, 960, 992, 1240, 1280, 1322, 1488, 1860, 1920, 1983, 1984, 2480, 2644, 2976, 3305, 3720, 3840, 3966, 3968, 4960, 5288, 5952, 6610, 7440, 7932, 7936, 9915, 9920, 10576, 11904, 13220, 14880, 15864, 19830, 19840, 20491, 21152, 23808, 26440, 29760, 31728, 39660, 39680, 40982, 42304, 52880, 59520, 61473, 63456, 79320, 81964, 84608, 102455, 105760, 119040, 122946, 126912, 158640, 163928, 169216, 204910, 211520, 245892, 253824, 307365, 317280, 327856, 409820, 423040, 491784, 507648, 614730, 634560, 655712, 819640, 846080, 983568, 1229460, 1269120, 1311424, 1639280, 1967136, 2458920, 2538240, 2622848, 3278560, 3934272, 4917840, 5245696, 6557120, 7868544, 9835680, 13114240, 15737088, 19671360, 26228480, 39342720, 78685440]

約数ペア:

[(1, 78685440), (2, 39342720), (3, 26228480), (4, 19671360), (5, 15737088), (6, 13114240), (8, 9835680), (10, 7868544), (12, 6557120), (15, 5245696), (16, 4917840), (20, 3934272), (24, 3278560), (30, 2622848), (31, 2538240), (32, 2458920), (40, 1967136), (48, 1639280), (60, 1311424), (62, 1269120), (64, 1229460), (80, 983568), (93, 846080), (96, 819640), (120, 655712), (124, 634560), (128, 614730), (155, 507648), (160, 491784), (186, 423040), (192, 409820), (240, 327856), (248, 317280), (256, 307365), (310, 253824), (320, 245892), (372, 211520), (384, 204910), (465, 169216), (480, 163928), (496, 158640), (620, 126912), (640, 122946), (661, 119040), (744, 105760), (768, 102455), (930, 84608), (960, 81964), (992, 79320), (1240, 63456), (1280, 61473), (1322, 59520), (1488, 52880), (1860, 42304), (1920, 40982), (1983, 39680), (1984, 39660), (2480, 31728), (2644, 29760), (2976, 26440), (3305, 23808), (3720, 21152), (3840, 20491), (3966, 19840), (3968, 19830), (4960, 15864), (5288, 14880), (5952, 13220), (6610, 11904), (7440, 10576), (7932, 9920), (7936, 9915)]