20921536

素因数分解:

$2^6\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{233}}^1$

素因数の和:329

約数の個数: 56

約数和(自身を含む): 44220384

約数和(自身を除く): 23298848

約数列:

[1, 2, 4, 8, 16, 23, 32, 46, 61, 64, 92, 122, 184, 233, 244, 368, 466, 488, 736, 932, 976, 1403, 1472, 1864, 1952, 2806, 3728, 3904, 5359, 5612, 7456, 10718, 11224, 14213, 14912, 21436, 22448, 28426, 42872, 44896, 56852, 85744, 89792, 113704, 171488, 227408, 326899, 342976, 454816, 653798, 909632, 1307596, 2615192, 5230384, 10460768, 20921536]

約数ペア:

[(1, 20921536), (2, 10460768), (4, 5230384), (8, 2615192), (16, 1307596), (23, 909632), (32, 653798), (46, 454816), (61, 342976), (64, 326899), (92, 227408), (122, 171488), (184, 113704), (233, 89792), (244, 85744), (368, 56852), (466, 44896), (488, 42872), (736, 28426), (932, 22448), (976, 21436), (1403, 14912), (1472, 14213), (1864, 11224), (1952, 10718), (2806, 7456), (3728, 5612), (3904, 5359)]