21327248

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{881}}^1$

素因数の和:995

約数の個数: 40

約数和(自身を含む): 44294040

約数和(自身を除く): 22966792

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 89, 136, 178, 272, 356, 712, 881, 1424, 1513, 1762, 3026, 3524, 6052, 7048, 12104, 14096, 14977, 24208, 29954, 59908, 78409, 119816, 156818, 239632, 313636, 627272, 1254544, 1332953, 2665906, 5331812, 10663624, 21327248]

約数ペア:

[(1, 21327248), (2, 10663624), (4, 5331812), (8, 2665906), (16, 1332953), (17, 1254544), (34, 627272), (68, 313636), (89, 239632), (136, 156818), (178, 119816), (272, 78409), (356, 59908), (712, 29954), (881, 24208), (1424, 14977), (1513, 14096), (1762, 12104), (3026, 7048), (3524, 6052)]