20691200

素因数分解:

$2^8\times 5^2\times {\mathrm{53}}^1\times {\mathrm{61}}^1$

素因数の和:140

約数の個数: 108

約数和(自身を含む): 53035668

約数和(自身を除く): 32344468

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 53, 61, 64, 80, 100, 106, 122, 128, 160, 200, 212, 244, 256, 265, 305, 320, 400, 424, 488, 530, 610, 640, 800, 848, 976, 1060, 1220, 1280, 1325, 1525, 1600, 1696, 1952, 2120, 2440, 2650, 3050, 3200, 3233, 3392, 3904, 4240, 4880, 5300, 6100, 6400, 6466, 6784, 7808, 8480, 9760, 10600, 12200, 12932, 13568, 15616, 16165, 16960, 19520, 21200, 24400, 25864, 32330, 33920, 39040, 42400, 48800, 51728, 64660, 67840, 78080, 80825, 84800, 97600, 103456, 129320, 161650, 169600, 195200, 206912, 258640, 323300, 339200, 390400, 413824, 517280, 646600, 827648, 1034560, 1293200, 2069120, 2586400, 4138240, 5172800, 10345600, 20691200]

約数ペア:

[(1, 20691200), (2, 10345600), (4, 5172800), (5, 4138240), (8, 2586400), (10, 2069120), (16, 1293200), (20, 1034560), (25, 827648), (32, 646600), (40, 517280), (50, 413824), (53, 390400), (61, 339200), (64, 323300), (80, 258640), (100, 206912), (106, 195200), (122, 169600), (128, 161650), (160, 129320), (200, 103456), (212, 97600), (244, 84800), (256, 80825), (265, 78080), (305, 67840), (320, 64660), (400, 51728), (424, 48800), (488, 42400), (530, 39040), (610, 33920), (640, 32330), (800, 25864), (848, 24400), (976, 21200), (1060, 19520), (1220, 16960), (1280, 16165), (1325, 15616), (1525, 13568), (1600, 12932), (1696, 12200), (1952, 10600), (2120, 9760), (2440, 8480), (2650, 7808), (3050, 6784), (3200, 6466), (3233, 6400), (3392, 6100), (3904, 5300), (4240, 4880)]