21020928

素因数分解:

$2^8\times 3^1\times {\mathrm{101}}^1\times {\mathrm{271}}^1$

素因数の和:391

約数の個数: 72

約数和(自身を含む): 56708736

約数和(自身を除く): 35687808

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 101, 128, 192, 202, 256, 271, 303, 384, 404, 542, 606, 768, 808, 813, 1084, 1212, 1616, 1626, 2168, 2424, 3232, 3252, 4336, 4848, 6464, 6504, 8672, 9696, 12928, 13008, 17344, 19392, 25856, 26016, 27371, 34688, 38784, 52032, 54742, 69376, 77568, 82113, 104064, 109484, 164226, 208128, 218968, 328452, 437936, 656904, 875872, 1313808, 1751744, 2627616, 3503488, 5255232, 7006976, 10510464, 21020928]

約数ペア:

[(1, 21020928), (2, 10510464), (3, 7006976), (4, 5255232), (6, 3503488), (8, 2627616), (12, 1751744), (16, 1313808), (24, 875872), (32, 656904), (48, 437936), (64, 328452), (96, 218968), (101, 208128), (128, 164226), (192, 109484), (202, 104064), (256, 82113), (271, 77568), (303, 69376), (384, 54742), (404, 52032), (542, 38784), (606, 34688), (768, 27371), (808, 26016), (813, 25856), (1084, 19392), (1212, 17344), (1616, 13008), (1626, 12928), (2168, 9696), (2424, 8672), (3232, 6504), (3252, 6464), (4336, 4848)]