21345272

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{1229}}^1$

素因数の和:1415

約数の個数: 32

約数和(自身を含む): 43394400

約数和(自身を除く): 22049128

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 167, 334, 668, 1229, 1336, 2171, 2458, 4342, 4916, 8684, 9832, 15977, 17368, 31954, 63908, 127816, 205243, 410486, 820972, 1641944, 2668159, 5336318, 10672636, 21345272]

約数ペア:

[(1, 21345272), (2, 10672636), (4, 5336318), (8, 2668159), (13, 1641944), (26, 820972), (52, 410486), (104, 205243), (167, 127816), (334, 63908), (668, 31954), (1229, 17368), (1336, 15977), (2171, 9832), (2458, 8684), (4342, 4916)]