217840640

素因数分解:

$2^{10}\times 5^1\times {\mathrm{157}}^1\times {\mathrm{271}}^1$

素因数の和:453

約数の個数: 88

約数和(自身を含む): 527831232

約数和(自身を除く): 309990592

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 157, 160, 256, 271, 314, 320, 512, 542, 628, 640, 785, 1024, 1084, 1256, 1280, 1355, 1570, 2168, 2512, 2560, 2710, 3140, 4336, 5024, 5120, 5420, 6280, 8672, 10048, 10840, 12560, 17344, 20096, 21680, 25120, 34688, 40192, 42547, 43360, 50240, 69376, 80384, 85094, 86720, 100480, 138752, 160768, 170188, 173440, 200960, 212735, 277504, 340376, 346880, 401920, 425470, 680752, 693760, 803840, 850940, 1361504, 1387520, 1701880, 2723008, 3403760, 5446016, 6807520, 10892032, 13615040, 21784064, 27230080, 43568128, 54460160, 108920320, 217840640]

約数ペア:

[(1, 217840640), (2, 108920320), (4, 54460160), (5, 43568128), (8, 27230080), (10, 21784064), (16, 13615040), (20, 10892032), (32, 6807520), (40, 5446016), (64, 3403760), (80, 2723008), (128, 1701880), (157, 1387520), (160, 1361504), (256, 850940), (271, 803840), (314, 693760), (320, 680752), (512, 425470), (542, 401920), (628, 346880), (640, 340376), (785, 277504), (1024, 212735), (1084, 200960), (1256, 173440), (1280, 170188), (1355, 160768), (1570, 138752), (2168, 100480), (2512, 86720), (2560, 85094), (2710, 80384), (3140, 69376), (4336, 50240), (5024, 43360), (5120, 42547), (5420, 40192), (6280, 34688), (8672, 25120), (10048, 21680), (10840, 20096), (12560, 17344)]