21206784

素因数分解:

$2^8\times 3^1\times {\mathrm{53}}^1\times {\mathrm{521}}^1$

素因数の和:593

約数の個数: 72

約数和(自身を含む): 57616272

約数和(自身を除く): 36409488

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 53, 64, 96, 106, 128, 159, 192, 212, 256, 318, 384, 424, 521, 636, 768, 848, 1042, 1272, 1563, 1696, 2084, 2544, 3126, 3392, 4168, 5088, 6252, 6784, 8336, 10176, 12504, 13568, 16672, 20352, 25008, 27613, 33344, 40704, 50016, 55226, 66688, 82839, 100032, 110452, 133376, 165678, 200064, 220904, 331356, 400128, 441808, 662712, 883616, 1325424, 1767232, 2650848, 3534464, 5301696, 7068928, 10603392, 21206784]

約数ペア:

[(1, 21206784), (2, 10603392), (3, 7068928), (4, 5301696), (6, 3534464), (8, 2650848), (12, 1767232), (16, 1325424), (24, 883616), (32, 662712), (48, 441808), (53, 400128), (64, 331356), (96, 220904), (106, 200064), (128, 165678), (159, 133376), (192, 110452), (212, 100032), (256, 82839), (318, 66688), (384, 55226), (424, 50016), (521, 40704), (636, 33344), (768, 27613), (848, 25008), (1042, 20352), (1272, 16672), (1563, 13568), (1696, 12504), (2084, 10176), (2544, 8336), (3126, 6784), (3392, 6252), (4168, 5088)]