21279488

素因数分解:

$2^8\times {\mathrm{101}}^1\times {\mathrm{823}}^1$

素因数の和:940

約数の個数: 36

約数和(自身を含む): 42948528

約数和(自身を除く): 21669040

約数列:

[1, 2, 4, 8, 16, 32, 64, 101, 128, 202, 256, 404, 808, 823, 1616, 1646, 3232, 3292, 6464, 6584, 12928, 13168, 25856, 26336, 52672, 83123, 105344, 166246, 210688, 332492, 664984, 1329968, 2659936, 5319872, 10639744, 21279488]

約数ペア:

[(1, 21279488), (2, 10639744), (4, 5319872), (8, 2659936), (16, 1329968), (32, 664984), (64, 332492), (101, 210688), (128, 166246), (202, 105344), (256, 83123), (404, 52672), (808, 26336), (823, 25856), (1616, 13168), (1646, 12928), (3232, 6584), (3292, 6464)]