20131520

素因数分解:

$2^6\times 5^1\times {\mathrm{53}}^1\times {\mathrm{1187}}^1$

素因数の和:1257

約数の個数: 56

約数和(自身を含む): 48883824

約数和(自身を除く): 28752304

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 53, 64, 80, 106, 160, 212, 265, 320, 424, 530, 848, 1060, 1187, 1696, 2120, 2374, 3392, 4240, 4748, 5935, 8480, 9496, 11870, 16960, 18992, 23740, 37984, 47480, 62911, 75968, 94960, 125822, 189920, 251644, 314555, 379840, 503288, 629110, 1006576, 1258220, 2013152, 2516440, 4026304, 5032880, 10065760, 20131520]

約数ペア:

[(1, 20131520), (2, 10065760), (4, 5032880), (5, 4026304), (8, 2516440), (10, 2013152), (16, 1258220), (20, 1006576), (32, 629110), (40, 503288), (53, 379840), (64, 314555), (80, 251644), (106, 189920), (160, 125822), (212, 94960), (265, 75968), (320, 62911), (424, 47480), (530, 37984), (848, 23740), (1060, 18992), (1187, 16960), (1696, 11870), (2120, 9496), (2374, 8480), (3392, 5935), (4240, 4748)]