19997580880

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1453}}^1\times {\mathrm{1933}}^1$

素因数の和:3488

約数の個数: 80

約数和(自身を含む): 47073482640

約数和(自身を除く): 27075901760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1453, 1780, 1933, 2906, 3560, 3866, 5812, 7120, 7265, 7732, 9665, 11624, 14530, 15464, 19330, 23248, 29060, 30928, 38660, 58120, 77320, 116240, 129317, 154640, 172037, 258634, 344074, 517268, 646585, 688148, 860185, 1034536, 1293170, 1376296, 1720370, 2069072, 2586340, 2752592, 2808649, 3440740, 5172680, 5617298, 6881480, 10345360, 11234596, 13762960, 14043245, 22469192, 28086490, 44938384, 56172980, 112345960, 224691920, 249969761, 499939522, 999879044, 1249848805, 1999758088, 2499697610, 3999516176, 4999395220, 9998790440, 19997580880]

約数ペア:

[(1, 19997580880), (2, 9998790440), (4, 4999395220), (5, 3999516176), (8, 2499697610), (10, 1999758088), (16, 1249848805), (20, 999879044), (40, 499939522), (80, 249969761), (89, 224691920), (178, 112345960), (356, 56172980), (445, 44938384), (712, 28086490), (890, 22469192), (1424, 14043245), (1453, 13762960), (1780, 11234596), (1933, 10345360), (2906, 6881480), (3560, 5617298), (3866, 5172680), (5812, 3440740), (7120, 2808649), (7265, 2752592), (7732, 2586340), (9665, 2069072), (11624, 1720370), (14530, 1376296), (15464, 1293170), (19330, 1034536), (23248, 860185), (29060, 688148), (30928, 646585), (38660, 517268), (58120, 344074), (77320, 258634), (116240, 172037), (129317, 154640)]