78860800

素因数分解:

$2^9\times 5^2\times {\mathrm{61}}^1\times {\mathrm{101}}^1$

素因数の和:190

約数の個数: 120

約数和(自身を含む): 200553012

約数和(自身を除く): 121692212

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 61, 64, 80, 100, 101, 122, 128, 160, 200, 202, 244, 256, 305, 320, 400, 404, 488, 505, 512, 610, 640, 800, 808, 976, 1010, 1220, 1280, 1525, 1600, 1616, 1952, 2020, 2440, 2525, 2560, 3050, 3200, 3232, 3904, 4040, 4880, 5050, 6100, 6161, 6400, 6464, 7808, 8080, 9760, 10100, 12200, 12322, 12800, 12928, 15616, 16160, 19520, 20200, 24400, 24644, 25856, 30805, 31232, 32320, 39040, 40400, 48800, 49288, 51712, 61610, 64640, 78080, 80800, 97600, 98576, 123220, 129280, 154025, 156160, 161600, 195200, 197152, 246440, 258560, 308050, 323200, 390400, 394304, 492880, 616100, 646400, 780800, 788608, 985760, 1232200, 1292800, 1577216, 1971520, 2464400, 3154432, 3943040, 4928800, 7886080, 9857600, 15772160, 19715200, 39430400, 78860800]

約数ペア:

[(1, 78860800), (2, 39430400), (4, 19715200), (5, 15772160), (8, 9857600), (10, 7886080), (16, 4928800), (20, 3943040), (25, 3154432), (32, 2464400), (40, 1971520), (50, 1577216), (61, 1292800), (64, 1232200), (80, 985760), (100, 788608), (101, 780800), (122, 646400), (128, 616100), (160, 492880), (200, 394304), (202, 390400), (244, 323200), (256, 308050), (305, 258560), (320, 246440), (400, 197152), (404, 195200), (488, 161600), (505, 156160), (512, 154025), (610, 129280), (640, 123220), (800, 98576), (808, 97600), (976, 80800), (1010, 78080), (1220, 64640), (1280, 61610), (1525, 51712), (1600, 49288), (1616, 48800), (1952, 40400), (2020, 39040), (2440, 32320), (2525, 31232), (2560, 30805), (3050, 25856), (3200, 24644), (3232, 24400), (3904, 20200), (4040, 19520), (4880, 16160), (5050, 15616), (6100, 12928), (6161, 12800), (6400, 12322), (6464, 12200), (7808, 10100), (8080, 9760)]