21333295

素因数分解:

$5^1\times {\mathrm{19}}^2\times {\mathrm{53}}^1\times {\mathrm{223}}^1$

素因数の和:319

約数の個数: 24

約数和(自身を含む): 27651456

約数和(自身を除く): 6318161

約数列:

[1, 5, 19, 53, 95, 223, 265, 361, 1007, 1115, 1805, 4237, 5035, 11819, 19133, 21185, 59095, 80503, 95665, 224561, 402515, 1122805, 4266659, 21333295]

約数ペア:

[(1, 21333295), (5, 4266659), (19, 1122805), (53, 402515), (95, 224561), (223, 95665), (265, 80503), (361, 59095), (1007, 21185), (1115, 19133), (1805, 11819), (4237, 5035)]